[gem] add remotipart gem
[routs] add set picture concern
[concern] picture controller
[locale]
[view] ajaxed picture upload. Make new partials because engines override this partials
[spec/feature] student ajax photo upload
[spec/feature] clear comments
[fix] remove unused method from students controller
Merge pull request #293 from Genshin/ajaxify_student_photo

Ajaxify student photo