Change intl to use new pub layout

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

Index: pkg/intl/data/dates/symbols/is.json
===================================================================
--- pkg/intl/data/dates/symbols/is.json	(revision 12515)
+++ pkg/intl/data/dates/symbols/is.json	(working copy)
@@ -1 +0,0 @@
-{"DATEFORMATS":["EEEE, d. MMMM y","d. MMMM y","d.M.yyyy","d.M.yyyy"],"NARROWWEEKDAYS":["S","M","Þ","M","F","F","L"],"STANDALONESHORTMONTHS":["jan","feb","mar","apr","maí","jún","júl","ágú","sep","okt","nóv","des"],"ERANAMES":["fyrir Krist","eftir Krist"],"FIRSTWEEKCUTOFFDAY":3,"NARROWMONTHS":["J","F","M","A","M","J","J","Á","L","O","N","D"],"STANDALONESHORTWEEKDAYS":["sun","mán","þri","mið","fim","fös","lau"],"FIRSTDAYOFWEEK":0,"STANDALONEWEEKDAYS":["sunnudagur","mánudagur","þriðjudagur","miðvikudagur","fimmtudagur","föstudagur","laugardagur"],"WEEKDAYS":["sunnudagur","mánudagur","þriðjudagur","miðvikudagur","fimmtudagur","föstudagur","laugardagur"],"QUARTERS":["1st fjórðungur","2nd fjórðungur","3rd fjórðungur","4th fjórðungur"],"ERAS":["fyrir Krist","eftir Krist"],"MONTHS":["janúar","febrúar","mars","apríl","maí","júní","júlí","ágúst","september","október","nóvember","desember"],"TIMEFORMATS":["HH:mm:ss zzzz","HH:mm:ss z","HH:mm:ss","HH:mm"],"SHORTWEEKDAYS":["sun","mán","þri","mið","fim","fös","lau"],"SHORTQUARTERS":["F1","F2","F3","F4"],"WEEKENDRANGE":[5,6],"STANDALONENARROWWEEKDAYS":["s","m","þ","m","f","f","l"],"AVAILABLEFORMATS":null,"NAME":"is","AMPMS":["f.h.","e.h."],"STANDALONEMONTHS":["janúar","febrúar","mars","apríl","maí","júní","júlí","ágúst","september","október","nóvember","desember"],"SHORTMONTHS":["jan","feb","mar","apr","maí","jún","júl","ágú","sep","okt","nóv","des"],"STANDALONENARROWMONTHS":["j","f","m","a","m","j","j","á","s","o","n","d"]}