Update polymer tutorial; make directory paths match new sample structure

src/site/docs/tutorials/polymer-intro/examples/stopwatch/web/index.html_bootstrap.dart.js

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+C.ER=H.Kx('yy')
+C.CS=H.Kx('vm')
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+$.libraries_to_load = {}
+$.te="$cachedFunction"
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+I.$lazy($,"nullLiteralCallPattern","fN","D1",function(){return H.LX(function(){var $argumentsExpr$='$arguments$'
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+I.$lazy($,"undefinedLiteralCallPattern","rZ","Kr",function(){return H.LX(function(){var $argumentsExpr$='$arguments$'
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+I.$lazy($,"_toStringList","yu","tw",function(){return[]})
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+I.$lazy($,"context","eo","cM",function(){return P.ND(function(){return this}())})
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+I.$lazy($,"_sheetLog","dz","Es",function(){return N.Jx("polymer.stylesheet")})
+I.$lazy($,"_changedMethodQueryOptions","pY","Jp",function(){return new A.Wq(!1,!1,!0,C.rc,!1,!0,null,A.Xm())})
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+I.$lazy($,"_expando","fF","rw",function(){return H.VM(new P.kM("template_binding"),[null])})
+
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+I = I.$finishIsolateConstructor(I)
+$=new I()
+function convertToFastObject(properties) {
+  function MyClass() {};
+  MyClass.prototype = properties;
+  new MyClass();
+  return properties;
+}
+A = convertToFastObject(A)
+B = convertToFastObject(B)
+C = convertToFastObject(C)
+D = convertToFastObject(D)
+E = convertToFastObject(E)
+F = convertToFastObject(F)
+G = convertToFastObject(G)
+H = convertToFastObject(H)
+J = convertToFastObject(J)
+K = convertToFastObject(K)
+L = convertToFastObject(L)
+M = convertToFastObject(M)
+N = convertToFastObject(N)
+O = convertToFastObject(O)
+P = convertToFastObject(P)
+Q = convertToFastObject(Q)
+R = convertToFastObject(R)
+S = convertToFastObject(S)
+T = convertToFastObject(T)
+U = convertToFastObject(U)
+V = convertToFastObject(V)
+W = convertToFastObject(W)
+X = convertToFastObject(X)
+Y = convertToFastObject(Y)
+Z = convertToFastObject(Z)
+!function(){function intern(a){var u={}
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+;(function (callback) {
+  if (typeof document === "undefined") {
+    callback(null);
+    return;
+  }
+  if (document.currentScript) {
+    callback(document.currentScript);
+    return;
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+
+  var scripts = document.scripts;
+  function onLoad(event) {
+    for (var i = 0; i < scripts.length; ++i) {
+      scripts[i].removeEventListener("load", onLoad, false);
+    }
+    callback(event.target);
+  }
+  for (var i = 0; i < scripts.length; ++i) {
+    scripts[i].addEventListener("load", onLoad, false);
+  }
+})(function(currentScript) {
+  init.currentScript = currentScript;
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+  if (typeof dartMainRunner === "function") {
+    dartMainRunner((function(a){H.wW(E.Im(),a)}), []);
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+function init(){I.p={}
+function generateAccessor(a,b,c){var y=a.split("-")
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+t.push(s)}if(p)y[s]=p}}if(typeof dart_precompiled!="function"){u+="return [\n  "+t.join(",\n  ")+"\n]"
+var v=new Function("$collectedClasses",u)(a)
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+var f=b
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+var e={}
+init.interceptorsByTag=Object.create(null)
+init.leafTags={}
+function finishClass(a9){var d=Object.prototype.hasOwnProperty
+if(d.call(e,a9))return
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+var a0=y[a9]
+if(!a0||typeof a0!="string")return
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+var a1=x[a9]
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+I.$lazy=function(a,b,c,d,e){var y={}
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+})()