Support FontAwesome 4
Create a copy of daysOfWeek to avoid modification of original options object for reusability in multiple daterangepicker instances
Merge pull request #197 from luchaos/master

Multiple instances of daterangepicker with shared options modify locales.daysOfWeek multiple times if startDay > 0
Clone daysOfWeek only if locale option was set
Merge pull request #198 from luchaos/master

Clone daysOfWeek only if locale option was set
Whoops - backwards right arrow for systems still on pre-4.0
Merge pull request #194 from froodian/master

Support FontAwesome 4