Fix spec/requests/admin/types_and_methods/enrollment_statuses_spec.rb
Fix spec/models/student_spec.rb
Totally WIP
Fix Student model
Merge branch 'develop' of git://github.com/tapalilov/GAKUEngine into develop
Delete worker specs
Merge branch 'develop' of git://github.com/tapalilov/GAKUEngine into develop

Conflicts:
	core/app/views/gaku/students/_show_table.html.slim
[fix]  issue with edit button students#show specialties
[fix] commute method for students#show
[fix] commute method initial creation