add support for time filter
change function name for new filter
fix notes on form_widget_args
use bootstrap-daterangepicker as for timepicker, datetimepicker, and datepicker
change momentjs version for bootstrap2
fixes issue #621 and #603 for bootstrap2
Merge pull request #688 from pawl/daterangepicker

Use bootstrap-daterangepicker instead of bootstrap-datetimepicker and add Time filter support