[exfm] Strip whitespace
[exfm] Fix comment
[exfm] Refactor the title cleanup
[exfm] minor cleanups
[exfm] Check if resolved URLs are readable.

* Often ex.fm returns URLs which return with status code 404 and 403.
  These URLs can't be played and may block other results.
* Now using a consistent coding style (could be checked with jslint)
[exfm] Bundlify
[exfm] Remove requirejs in comments.
[exfm] There should not be an axe in here
Merge pull request #37 from xhochy/feature/exfm-head-request-first

[exfm] Bundlify & Check if resolved URLs are readable.