[spec/requests] Fix csv_spec
[spec/requests] Fix exam_portions_spec
Try to fix student_worker under postgres
Clean migrations
Try to fix posgresql error on address
Clean models and remove unused gems
[grading] fixing issues with bootstrap bug for toggle
Try to fix posgresql failures
Merge branch 'develop' of git://github.com/kalkov/GAKUEngine into develop
[grading/fix] present as default attendance type, blank are allowed for reason
[js] move sortable js for admissin phases to core
pull tapalilov + fix
Applicant views/ students scopes