Fix sorting options on Show List page.

Fix Layout "Poster" sort of Paused, Ended, and Continuing shows as they were random.
Fix Layout "Simple" sort of tvrage "New" and "Returning" series by changing status column text to "Continuing".
Merge pull request #43 from SickragePVR/feature/FixShowListSort

Fix sorting options on Show List page.
Add an in progress spinner that is suitable for the dark theme.

Add dark spinner to "Add New Show" (searching indexers), "Add existing shows" (Loading Folders), Coming Eps and all config pages (when saving).
Merge pull request #44 from SickragePVR/feature/AddDarkSpinner

Add an in progress spinner that is suitable for the dark theme.
Fix theme identification for spinner when restarting.
Merge pull request #45 from JackDandy/feature/FixRestartRef

Fix theme identification for spinner when restarting.
Merge remote-tracking branch 'PVR/develop' into dev

Conflicts:
	gui/slick/js/ajaxEpSubtitles.js