Added rights to soc/views/models/timeline.py.
Added rights to soc/views/models/timeline.py.

Only a developer or a host for the program this timeline is for can edit it now.

Patch by: Lennard de Rijk
Reviewed by: to-be-reviewed

MatthewWilkes/mw4068-packaging,MatthewWilkes/mw4068-packaging,MatthewWilkes/mw4068-packaging,MatthewWilkes/mw4068-packaging