Added "Store in universal time" option. Based on patch for bug 165963

calendar/locales/en-US/chrome/calendar/calendar.properties

@@ -89,6 +89,7 @@ reloadServersOnLaunch=false
 defaultEventLength=60
 defaultSnoozeAlarmLength=60
 dateFormat=0
+storeInGmt=0
 defaultStartHour=8
 defaultEndHour=17
 defaultzone=America/New_York

calendar/locales/en-US/chrome/calendar/prefs.dtd

@@ -68,6 +68,7 @@
 <!ENTITY pref.dateformat.label      "Date Text Format:" >
 <!ENTITY pref.dateformat.long       "Long" >
 <!ENTITY pref.dateformat.short      "Short"  >
+<!ENTITY pref.dateformat.storeingmt "Store dates in Universal Time" >
 <!ENTITY pref.defaultlength.label   "Default Event Length:" >
 <!ENTITY pref.defaultsnoozelength.label   "Default Snooze Length:" >