Add missing imports, remove unsused imports, fix too long lines and some other style fixes in soc.views.models.student_project module.
Add missing imports, remove unsused imports, fix too long lines and some other style fixes in soc.views.models.student_project module.

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

--HG--
extra : convert_revision : svn%3A32761e7d-7263-4528-b7be-7235b26367ec/trunk%402856

rhyolight/nupic.son,rhyolight/nupic.son,rhyolight/nupic.son