fixed scrollto bug on detail pages
improoved mobile view

removed unnessesary containers and boxes, to simplify the experience.
Added collapsible Nav

also changed info-box text to max. 4 lines, to solve conflicts with
headlines, that need more than one line. (hotfix, maybe we need a
better solution in the future)
Merge pull request #29 from MathiasTim/master

fixed scrollto bug, improoved mobile view