VE-1470: First pass on UI for filter
VE-1470: Final cleanup of filter UI
Merge branch 've-sprint-25' into VE-1470

Conflicts:
	extensions/VisualEditor/modules/ve-mw/ui/dialogs/ve.ui.MWTemplateDialog.js
VE-1470: Cleanup after sprint branch merge
VE-1470: Renaming filter classname
Merge pull request #4605 from Wikia/VE-1470

VE-1470: Filter UI