added research assistant, only missing fields: chair, start date of work #79
Merge branch 'develop' into develop-js-wimi
adjusted the wimi tests, so that they will fulfill the role requirement
small refactorings in student language and programming language tests
fixed test description
added a full student profile to seed data
small fixes in seeds
adapted new student profile design for research assistants #79
introduced factorygirl for language and programming language testing #79
added employment start date to user #79
more rewrite of language and programming language tests #79
Merge pull request #168 from tkowark/develop-js-wimi

Develop js wimi
added link for research assistants to navbar #79
Merge pull request #169 from tkowark/develop-js

Develop js