Adresses #73 - Removed duplicate code.
Closes #73 - Switched from external lecture course div to collapsible set with integrated lecture course collapsible.
Updated app version.
updated impressum
Merge branch 'master' of https://github.com/University-of-Potsdam-MM/UP.App
updated impressum
added css style block for panel and now initialize panel when router gets initialized closes #136
Merge pull request #137 from University-of-Potsdam-MM/fix-menu-close

added css style block for panel and now initialize panel when router get...
merged master into fixing branch