Hide sortable header title if sortable evaluates to false
Enable html5 mode for openproject angular app
Forward search direction indicators to angular work package table
Merge branch 'feature/ui-component-table-widgets' of github.com:opf/openproject into feature/ui-component-table-widgets

Conflicts:
	app/controllers/work_packages_controller.rb
Re-enable sort headers (WIP)
Merge branch 'feature/ui-component-table-widgets' of github.com:opf/openproject into feature/ui-component-table-widgets