added new attributes
added new employer fields
first attempt to fix student matching #375
adjusted test to working matching process #375
Added matching for degree and academic program #375
Added academic_program to Job
Added outland to region
Adjusted obligatory entries of a job
Added filter for academic program
fixed merge
moved number_of_employees possibilities from view to model
removed head from employer #369
Merge remote-tracking branch 'origin/develop' into feature/employer-profile

Conflicts:
	db/schema.rb
login logic in sessions controller again
fixed login bug
employer index page visible #344
employer index visible #344
employer index visible #344
fixed commit #344
fixed commit again #344