added new attributes
added new employer fields
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
added full_name method for deputy
Merge pull request #386 from hpi-swt2/feature/employer-profile

Feature/employer profile
Merge remote-tracking branch 'origin/develop' into feature/matching

Conflicts:
	db/schema.rb