Fix too long lines in soc.views.models.student_proposal module.
Fix too long lines in soc.views.models.student_proposal module.

Patch by: Pawel Solyga
Reviewed by: to-be-reviewed

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