Async initialization for DateFormat

pkg/intl/data/dates/symbols/ca.json

Index: pkg/intl/data/dates/symbols/ca.json
===================================================================
--- pkg/intl/data/dates/symbols/ca.json	(revision 0)
+++ pkg/intl/data/dates/symbols/ca.json	(revision 0)
@@ -0,0 +1 @@
+{"DATEFORMATS":["EEEE d MMMM 'de' y","d MMMM 'de' y","dd/MM/yyyy","dd/MM/yy"],"NARROWWEEKDAYS":["G","l","T","C","J","V","S"],"STANDALONESHORTMONTHS":["gen.","febr.","març","abr.","maig","juny","jul.","ag.","set.","oct.","nov.","des."],"ERANAMES":["abans de Crist","després de Crist"],"FIRSTWEEKCUTOFFDAY":3,"NARROWMONTHS":["G","F","M","A","M","J","G","A","S","O","N","D"],"STANDALONESHORTWEEKDAYS":["dg","dl","dt","dc","dj","dv","ds"],"FIRSTDAYOFWEEK":0,"STANDALONEWEEKDAYS":["Diumenge","Dilluns","Dimarts","Dimecres","Dijous","Divendres","Dissabte"],"WEEKDAYS":["diumenge","dilluns","dimarts","dimecres","dijous","divendres","dissabte"],"QUARTERS":["1r trimestre","2n trimestre","3r trimestre","4t trimestre"],"ERAS":["aC","dC"],"MONTHS":["de gener","de febrer","de març","d’abril","de maig","de juny","de juliol","d’agost","de setembre","d’octubre","de novembre","de desembre"],"TIMEFORMATS":["H:mm:ss zzzz","H:mm:ss z","H:mm:ss","H:mm"],"SHORTWEEKDAYS":["dg.","dl.","dt.","dc.","dj.","dv.","ds."],"SHORTQUARTERS":["1T","2T","3T","4T"],"WEEKENDRANGE":[5,6],"STANDALONENARROWWEEKDAYS":["g","l","t","c","j","v","s"],"AVAILABLEFORMATS":null,"NAME":"ca","AMPMS":["a.m.","p.m."],"STANDALONEMONTHS":["gener","febrer","març","abril","maig","juny","juliol","agost","setembre","octubre","novembre","desembre"],"SHORTMONTHS":["de gen.","de febr.","de març","d’abr.","de maig","de juny","de jul.","d’ag.","de set.","d’oct.","de nov.","de des."],"STANDALONENARROWMONTHS":["g","f","m","a","m","j","j","a","s","o","n","d"]}