removing Web UI tutorials, updating remaining 4 to current release, + review pass

src/diagrams/tutorials/fetchdata/stringify.graffle

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
         <key>ActiveLayerIndex</key>
         <integer>0</integer>
         <key>ApplicationVersion</key>
         <array>
                 <string>com.omnigroup.OmniGrafflePro</string>
-                <string>139.16.0.171715</string>
+                <string>139.18.0.187838</string>
         </array>
         <key>AutoAdjust</key>
         <true/>
         <key>BackgroundGraphic</key>
         <dict>
                 <key>Bounds</key>
                 <string>{{0, 0}, {576, 733}}</string>
                 <key>Class</key>
                 <string>SolidGraphic</string>
                 <key>ID</key>
@@ skipping 77 matching lines @@
                                         <string>NO</string>
                                 </dict>
                         </dict>
                         <key>Text</key>
                         <dict>
                                 <key>Align</key>
                                 <integer>0</integer>
                                 <key>Pad</key>
                                 <integer>2</integer>
                                 <key>Text</key>
-                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf390
 \cocoascreenfonts1{\fonttbl\f0\fnil\fcharset0 HelveticaNeue;}
 {\colortbl;\red255\green255\blue255;\red128\green0\blue0;}
 \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural
 
 \f0\i\b\fs28 \cf2 Save to $tutorial/fetchdata/images/jsonstring.png}</string>
                                 <key>VerticalPad</key>
                                 <integer>2</integer>
                         </dict>
                         <key>Wrap</key>
                         <string>NO</string>
@@ skipping 45 matching lines @@
                                         <string>NO</string>
                                 </dict>
                         </dict>
                         <key>Text</key>
                         <dict>
                                 <key>Align</key>
                                 <integer>0</integer>
                                 <key>Pad</key>
                                 <integer>2</integer>
                                 <key>Text</key>
-                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf390
 \cocoascreenfonts1{\fonttbl\f0\fnil\fcharset0 HelveticaNeue;}
 {\colortbl;\red255\green255\blue255;\red128\green0\blue0;}
 \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural
 
 \f0\i\b\fs28 \cf2 Save to $tutorial/fetchdata/images/stringify.png}</string>
                                 <key>VerticalPad</key>
                                 <integer>2</integer>
                         </dict>
                         <key>Wrap</key>
                         <string>NO</string>
@@ skipping 34 matching lines @@
                                 <dict>
                                         <key>CornerRadius</key>
                                         <real>7</real>
                                 </dict>
                         </dict>
                         <key>Text</key>
                         <dict>
                                 <key>Align</key>
                                 <integer>0</integer>
                                 <key>Text</key>
-                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf390
 \cocoascreenfonts1{\fonttbl\f0\fmodern\fcharset0 CourierNewPSMT;}
 {\colortbl;\red255\green255\blue255;}
 \deftab720
 \pard\tx1726\pardeftab720
 
 \f0\fs28 \cf0 \{ "favoriteNumber":44,\
   "valueOfPi":3.141592,\
   "chocolate":true,\
   "horrorScope":"virgo",\
   "favoriteThings":["raindrops",\
@@ skipping 42 matching lines @@
                         <string>LineGraphic</string>
                         <key>Head</key>
                         <dict>
                                 <key>ID</key>
                                 <integer>34159</integer>
                         </dict>
                         <key>ID</key>
                         <integer>34171</integer>
                         <key>Points</key>
                         <array>
-                                <string>{469, 598.91523243851429}</string>
-                                <string>{312, 602.6474790059624}</string>
+                                <string>{469, 598.9152327292777}</string>
+                                <string>{312, 602.64748048243609}</string>
                         </array>
                         <key>Style</key>
                         <dict>
                                 <key>stroke</key>
                                 <dict>
                                         <key>HeadArrow</key>
                                         <string>FilledArrow</string>
                                         <key>Legacy</key>
                                         <true/>
                                         <key>TailArrow</key>
@@ skipping 183 matching lines @@
                                         <string>NO</string>
                                 </dict>
                         </dict>
                         <key>Text</key>
                         <dict>
                                 <key>Align</key>
                                 <integer>0</integer>
                                 <key>Pad</key>
                                 <integer>2</integer>
                                 <key>Text</key>
-                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf390
 \cocoascreenfonts1{\fonttbl\f0\fnil\fcharset0 HelveticaNeue;}
 {\colortbl;\red255\green255\blue255;}
 \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural
 
 \f0\fs24 \cf0 Map: string keys, values of various types}</string>
                                 <key>VerticalPad</key>
                                 <integer>2</integer>
                         </dict>
                         <key>Wrap</key>
                         <string>NO</string>
@@ skipping 43 matching lines @@
                                         <string>NO</string>
                                 </dict>
                         </dict>
                         <key>Text</key>
                         <dict>
                                 <key>Align</key>
                                 <integer>0</integer>
                                 <key>Pad</key>
                                 <integer>2</integer>
                                 <key>Text</key>
-                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf390
 \cocoascreenfonts1{\fonttbl\f0\fnil\fcharset0 HelveticaNeue;}
 {\colortbl;\red255\green255\blue255;}
 \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural
 
 \f0\fs24 \cf0 List of strings}</string>
                                 <key>VerticalPad</key>
                                 <integer>2</integer>
                         </dict>
                         <key>Wrap</key>
                         <string>NO</string>
@@ skipping 43 matching lines @@
                                         <string>NO</string>
                                 </dict>
                         </dict>
                         <key>Text</key>
                         <dict>
                                 <key>Align</key>
                                 <integer>0</integer>
                                 <key>Pad</key>
                                 <integer>2</integer>
                                 <key>Text</key>
-                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf390
 \cocoascreenfonts1{\fonttbl\f0\fnil\fcharset0 HelveticaNeue;}
 {\colortbl;\red255\green255\blue255;}
 \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural
 
 \f0\fs24 \cf0 String}</string>
                                 <key>VerticalPad</key>
                                 <integer>2</integer>
                         </dict>
                         <key>Wrap</key>
                         <string>NO</string>
@@ skipping 43 matching lines @@
                                         <string>NO</string>
                                 </dict>
                         </dict>
                         <key>Text</key>
                         <dict>
                                 <key>Align</key>
                                 <integer>0</integer>
                                 <key>Pad</key>
                                 <integer>2</integer>
                                 <key>Text</key>
-                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf390
 \cocoascreenfonts1{\fonttbl\f0\fnil\fcharset0 HelveticaNeue;}
 {\colortbl;\red255\green255\blue255;}
 \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural
 
 \f0\fs24 \cf0 bool}</string>
                                 <key>VerticalPad</key>
                                 <integer>2</integer>
                         </dict>
                         <key>Wrap</key>
                         <string>NO</string>
@@ skipping 43 matching lines @@
                                         <string>NO</string>
                                 </dict>
                         </dict>
                         <key>Text</key>
                         <dict>
                                 <key>Align</key>
                                 <integer>0</integer>
                                 <key>Pad</key>
                                 <integer>2</integer>
                                 <key>Text</key>
-                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf390
 \cocoascreenfonts1{\fonttbl\f0\fnil\fcharset0 HelveticaNeue;}
 {\colortbl;\red255\green255\blue255;}
 \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural
 
 \f0\fs24 \cf0 double}</string>
                                 <key>VerticalPad</key>
                                 <integer>2</integer>
                         </dict>
                         <key>Wrap</key>
                         <string>NO</string>
@@ skipping 43 matching lines @@
                                         <string>NO</string>
                                 </dict>
                         </dict>
                         <key>Text</key>
                         <dict>
                                 <key>Align</key>
                                 <integer>0</integer>
                                 <key>Pad</key>
                                 <integer>2</integer>
                                 <key>Text</key>
-                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf390
 \cocoascreenfonts1{\fonttbl\f0\fnil\fcharset0 HelveticaNeue;}
 {\colortbl;\red255\green255\blue255;}
 \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural
 
 \f0\fs24 \cf0 integer}</string>
                                 <key>VerticalPad</key>
                                 <integer>2</integer>
                         </dict>
                         <key>Wrap</key>
                         <string>NO</string>
@@ skipping 235 matching lines @@
                                 </dict>
                                 <key>stroke</key>
                                 <dict>
                                         <key>Draws</key>
                                         <string>NO</string>
                                 </dict>
                         </dict>
                 </dict>
                 <dict>
                         <key>Bounds</key>
-                        <string>{{29, 23}, {515, 402}}</string>
+                        <string>{{29, 23}, {493, 402}}</string>
                         <key>Class</key>
                         <string>ShapedGraphic</string>
                         <key>FitText</key>
                         <string>YES</string>
                         <key>Flow</key>
                         <string>Resize</string>
                         <key>FontInfo</key>
                         <dict>
                                 <key>Font</key>
                                 <string>HelveticaNeue</string>
@@ skipping 20 matching lines @@
                                 <dict>
                                         <key>CornerRadius</key>
                                         <real>7</real>
                                 </dict>
                         </dict>
                         <key>Text</key>
                         <dict>
                                 <key>Align</key>
                                 <integer>0</integer>
                                 <key>Text</key>
-                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+                                <string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf390
 \cocoascreenfonts1{\fonttbl\f0\fmodern\fcharset0 CourierNewPSMT;}
 {\colortbl;\red255\green255\blue255;\red1\green1\blue1;}
 \deftab720
 \pard\pardeftab720
 
-\f0\fs24 \cf2 import 'dart:json' as json;\
+\f0\fs24 \cf2 import 'dart:convert';\
 ...\
-\pard\pardeftab720
-\cf2 void showJson() \{\
+void showJson() \{\
   // Typed data to convert to JSON\
   num favNum = int.parse(favoriteNumber);\
   num pi = double.parse(valueOfPi);\
   var anElement = query('#true');\
   bool choco = anElement.checked ? true : false;\
   \
   List&lt;String&gt; favoriteThings = [ favOne, favTwo, favThree ];\
 \
   Map formData = \{\
     'favoriteNumber': favNum,\
     'valueOfPi': pi,\
     'chocolate': choco,\
     'horrorScope': horrorScope,\
     'favoriteThings': favoriteThings\
   \};\
 \
   // Convert everything to JSON\
-  intAsJson = json.stringify(favNum);          // int\
-  doubleAsJson = json.stringify(pi);           // double\
-  boolAsJson = json.stringify(choco);          // boolean\
-  stringAsJson = json.stringify(horrorScope);  // string\
-  listAsJson = json.stringify(favoriteThings); // list of strings\
-  mapAsJson = json.stringify(formData);        // map with string keys\
-                                               // and mixed values\
+  intAsJson = JSON.encode(favNum);          // int\
+  doubleAsJson = JSON.encode(pi);           // double\
+  boolAsJson = JSON.encode(choco);          // boolean\
+  stringAsJson = JSON.encode(horrorScope);  // string\
+  listAsJson = JSON.encode(favoriteThings); // list of strings\
+  mapAsJson = JSON.encode(formData);        // map with string keys\
+                                            // and mixed values\
 \}}</string>
                         </dict>
                         <key>Wrap</key>
                         <string>NO</string>
                 </dict>
                 <dict>
                         <key>Bounds</key>
-                        <string>{{47, 292}, {490, 116}}</string>
+                        <string>{{47, 292}, {475, 116}}</string>
                         <key>Class</key>
                         <string>ShapedGraphic</string>
                         <key>ID</key>
                         <integer>34160</integer>
                         <key>Magnets</key>
                         <array>
                                 <string>{0.38387096774193563, -0.25}</string>
                                 <string>{-0.39130434782608692, -0.25}</string>
                                 <string>{-0.026359714598051087, 0.5}</string>
                         </array>
@@ skipping 66 matching lines @@
                 <key>twopiSeparation</key>
                 <real>0.0</real>
         </dict>
         <key>LinksVisible</key>
         <string>NO</string>
         <key>MagnetsVisible</key>
         <string>NO</string>
         <key>MasterSheets</key>
         <array/>
         <key>ModificationDate</key>
-        <string>2013-02-13 23:15:50 +0000</string>
+        <string>2013-10-10 16:45:15 +0000</string>
         <key>Modifier</key>
         <string>Mary Campione</string>
         <key>NotesVisible</key>
         <string>NO</string>
         <key>Orientation</key>
         <integer>2</integer>
         <key>OriginVisible</key>
         <string>NO</string>
         <key>PageBreaks</key>
         <string>YES</string>
@@ skipping 86 matching lines @@
                 <array>
                         <array>
                                 <string>Canvas 1</string>
                                 <real>1</real>
                                 <real>1</real>
                         </array>
                 </array>
         </dict>
 </dict>
 </plist>