Add changeable CMS_PERMISSION
Split up Ticket model to support ticket types carrying different
information. Right now, there are three kinds:

* Support Ticket: No additional infomration.
* Venue Ticket: Additionally requires first and last name, T-Shirt size
and optional organization.
* SIM Card Ticket: In addition to Venue Ticket also the address of the
(local German) host is required to be able to activate an ordered SIM
card.
Added basic Django Admin support for extended ticketing.
Reorganized split of ticket models.
Merge remote-tracking branch 'origin/develop' into feature/extended-tickets
Merged changes form development and fixed them.
Merge branch 'feature/extended-tickets' of https://github.com/EuroPython/djep.git into feature/extended-tickets

Conflicts:
	pyconde/attendees/admin.py
	pyconde/attendees/models.py
Refers #105 -- Integrate tags in user profile
Refers #105 -- Add Ajax select for user tags
Refers #105 -- Enhance tag input interface with some jQueryUI autocomplete
Refers #105 -- Some cleanup
Refers #105 -- Add help text for tag input field
Added different ticket types (Financial Support, Venue Ticket and SIM
Card) to frontend.
Merge remote-tracking branch 'origin/develop' into feature/extended-tickets
Basic Parsley integration
Added migration for extended ticket types. Please note that due to
internal limitation of south/django contenttypes, the currently existing
ticket types are not associated with a concrete ticket model. This has
to be adjusted by hand.
Fix 118 - Add headline to proposal timeline
Merge pull request #119 from DasIch/fix/ticket118

Fix 118 - Add headline to proposal timeline
Fixed migration error. Thx MarkusH :-)
Fixed failing tests.