registry: missing function addition

* Adds missing dict-like functions iteritems and get to the new dict
  registry DictModuleAutoDiscoverySubRegistry.

* Updates some docs.

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

* Fixes an issue getting widgets in an unsupported way.

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>
utils: Git & SVN Harvester

* Harvester utils to download and archive SVN & Git repos

Signed-off-by: Jake Cowton <jake.calum.cowton@cern.ch>
utils: addition of call checks for vcs commands

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
travis: CFG_TMPDIR set to /tmp

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
flatpages: WIP initial commit
pages: new route registration

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
base: new signal `before_handle_user_exception`

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
pages: 404 exception handling

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
base: fix admin template

Signed-off-by: Javier Martin Montull <javier.martin.montull@cern.ch>
pages: support urls without final slash
pages: add validation for template name
pages: add last_modified and created columns