workflows: HP JS refactor WIP

* Fixes the initialization of bootstrap-tagsinput so that tags
  are color coded and tags can be added from menus.

* Amends the server side code to provide any existing tags as
  structures containing the tag and it's translated version.

* Replaced upstream bootstrap-tagsinput with inspirehep fork.
  NOTE To get the new version delete your existing bootstrap-tagsinput
  vendor and static folders and run `bower install` from the overlay.

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>
workflows: fix actions dropdown
workflows: maintable selection

* Adds usage of datatables-tabletools plugin to provide selection.

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>