Expose the generic browse/KEYWORD functionality

[ohadschn]

I noticed that navigating to http://www.favesound.de/browse/FOO gives me tracks related to FOO (I'm guessing using FOO as a keyword with the SoundCloud search API).

This is super useful, so it's a shame to limit it to just the links at the top (Tech House, Minimal, Deep House... we aren't all German 😉).

It could be as simple as a button that pops up a search dialog and then navigates to browse/foo. Or even better, add a text box to the same row of current genre links where one could enter his own genre (ideally this would be responsive but seeing as the current design relies on a redirect, some OK button would be great too).