Merge pull request #238 from yousraHazem/development

Merge sprint 1 work into master
fixed_empty_message_problem
Issue 285 add basic blueimp gallery
Revert "Issue 285 add basic blueimp gallery"

This reverts commit dad05183506af029b3aaf07d15c3871d3856a793.
Issue #285 add gallery with blueimp
trying_to_fix_display
fixed recepient exist
#296 pushing the first version of the code
Issue #285 add Videos gallery
Fixed destroy group bug, fixed show view, added error reporting for groups form and added documentation for changes. #279
Finished the first three tasks of the story #279
Merge branch 'migrations' into c3_s27_photos_and_videos_gallery
fixed bug in view friend list
fixed bug in send_friend_request branch
fixed bug in view pending friends branch
added friend list view
added friendship controller
Issue #285 Put javascript in seperate file
Issue #285 add documentation and fix code
Update groups_controller.rb

Updated the documentation in groups_controller.rb related to issue #279