Merge pull request #116 from uNiversaI/newicon

[logo/artwork] New project logo, fanart and favicon
Bump version number, and revert JSON API version bump

There's no need to bump the JSON API version number at the moment. We don't use any of the new features yet and bumping the version number requires us to release two different versions one for gotham and one for helix.
Show placeholder artwork if no poster/fanart available for a movie
Merge branch 'fixes/no-artwork'
Add button to clear genre filter
Add button to clear selected genres
Merge branch 'fixes/clear-genre'
Add repository to addon.xml for auto updates

I've setup a repository on my server for now. It'll check for new version tags (vX.Y.Z) every 6 hours and update the repository as appropriate. I've set it to 6 hours so I don't hit the GitHub servers to often and because Kodi only checks for repository updates every 24 hours.

With this change users will only have to manually install the add-on once. Once it's installed it'll check for updates automatically.
Merge branch 'feature/auto-updates'
Bump version number
Add support for tags to TV shows
Add sort title for TV shows
Reorder fields and remove duplicate field.
Add content rating for TV shows
Merge branch 'feature/tv-fields'
Sort TV shows by sort title
Bump version
Clean up html files in music section
Remove broken image code
Allow delimiter to be specified for XWMM.util.convertArrayToList