Sickbeard image passthrough

The sickbeard api can return banners and posters for tvshows. The
content type must be set to 'image' and json_out() must not be used.

The fetch() method has been altered to bypass loads() on images,
because these are not in Json format.
Twitter Bootstrap update (2.3.0)
Sickbeard Show details page

New page for show details, including, banner, seasons/episodes.
Sickbeard labels

Added labels to the tables at the sickbeard-index.

Improved javascript apending td's to rows.
Default sort order

After loading all shows, sort table by first column (show namen)
Merge pull request #13 from styxit/master

Dedicated sickbeard-show pages