deposit: radio button deactivating
deposit: radio button deactivating

* Implements click listener on radio buttons that removes the active
  marker from the active radio button, so users can choose to not
  answer a specific question.

Signed-off-by: Marco Neumann <3829486b93ec44395f0b980424bae9b6fb07b7bc@crepererum.net>

inveniosoftware/invenio-deposit,inveniosoftware/invenio-deposit,inveniosoftware/invenio-deposit,inveniosoftware/invenio-deposit