OPAL-2354: Deal with empty list of existing variables
Changing style og Choosen widget
ChooserCss to override choosen gwt
Merge pull request #490 from emorency/OPAL-2354-add-to-view

OPAL-2354: Deal with empty list of existing variables
OPAL-2288: Apply similar style for chooser than typeahead (bootstrap)
Removing commented out code
Removing commented out code
Removing commented out code
Merge pull request #491 from emorency/OPAL-GWT-Choosen-Style

OPAL-2288: Apply similar style for chooser than typeahead (bootstrap)