Merge pull request #138 from tkowark/develop

Merge develop into master
errbit, baby, yeaaaah
Merge pull request #139 from tkowark/develop

fixed chair bug for anonymous user
Merge branch 'master' of https://github.com/tkowark/hpi-hiwi-portal
changed company and added favicon. mainly to test travis ci...
adapted chairs show to current job offers filter_status function
merged master