Päivitä genusers.py. Nyt mahdollista generoida opiskelijoita väliltä n:N
New database
Fixed old Student->Group associations
Assosiaatiokorjaukset speedfixin jäljiltä, tietokantapäivitykset
Delete students possible
Courses student table header fix
If no exercises, hide edit-button
Mark students quit from courses/view
delete course
Remove old id from Session when course deleted
Validation error when saving user information (email missing from form)
unrelevant sort removed
Logic when no courses are in system
Added table empty text when tables are empty
ignore core.php
Merge branch 'devel'

Liuta korjauksia, liekö viimeinen?