Added destroy method in the problems controller and added documentation
Added button delete problem in the Edit view of the problem
Fixed a minor mistake in id passed of the track
typo in track' controller s name in redirect
Fixed indentation in the method destroy
break down long lines
Fixed commas as Mamdou7's comment
added a space
fixing tab
fixing seeds
Merge pull request #369 from alaashafaee/dev_database

fixing seeds
Merging master with my branch and fixing conflicts
gem
deactivating imagemagick
Merge pull request #372 from alaashafaee/Design_Akram

Pull Request: Design_Akram_deactivating_imagemagick
Fixing conflicts with master
Fixing conflicts in problem controller
Fixed typo
Merge pull request #335 from alaashafaee/C2_Atef_Remove_Problem_4.18

Pull Request : C2 _Atef_Remove_problem 4.18
Issue #182 Removed unecessary file & fixed implementation errors