link LQ and HD-MP4s in the download-section
currently only Hackover13 has its LQ-Files registered in the media
database but this may or may not change, in the near future,
at the latest on the 31C3
Merge pull request #14 from MaZderMind/link-lq-and-hd-in-download

link LQ and HD-MP4s in the download-section
provide a separate downloads-page per event that works without js
it has the same look and feel as the original downloads-tab and will
usual not be accessed when javascript is available. without these
changes it's not possible to download files from the gui without
javascript.
fix linking