[menu] Add Teachers
[menu] Edit
[helper] Fix th_actions from html_helper
[views] Create gaku/shared/picture and upload_picture partials
Create Picture module and it_bahaves_as avatarable
[spec/requests] Rename images_spec to picture_spec in students and teachers
Clean js from students.coffee
Add picture field to School, Camous, Guardian
WIP : Add picure views for school and campus