oauth2server: initial release

* Initial release of OAuth2 provider for Invenio.
deposit: progress-bar and icon fix

* Fixes bootstrap 3 progress bars and changes to use Font-Awesome
  for icons.
installation: bootstrap-switch inclusion

* Adds bootstrap switch for on/off buttons.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
access: minor fix