[view] ajax picture for teacher
[js] ajax upload teacher
[concern] handle other resources for ajax picture concenr
[controller] include picture concern in teacher
[routes] add set picture concern to teachers
[spec/feature] ajax upload picture teacher
Merge branch 'staging' of github.com:Genshin/gaku into staging_picture_upload
[view] remove picture
[spec/feature] remove picture
[js] handle popover remove button
[routes] add remove_picture
[controller/concern] remove_picture action
[locale]
[clear] remove js debug and checking for editing
Merge pull request #297 from Genshin/staging_picture_upload

Staging picture upload and remove