Merge pull request #13 from WOYM/master

Update
#44 | You can now assign rooms to lessonTypes, also additionalInformation on rooms
Merge pull request #14 from WOYM/master

Update
#148
#142
#126
#151
Fixed CSS
Fixes #153
Work on #51 | Many improvements / fixes
Merge pull request #147 from tihansen/master

#44 | #148 | #142 | #126 | #151