My latest changes

Hey stoli, 

I did a bunch of fixes and started a big cleanup but i wasn't ready for a new version when you came back. This pull does not update the version number, but feel free to release it as 2.5.9 if you want.

Fixes included included in this pull are:
- Add Sets button to Movies submenu
- No more double artist slideshows running
- Landpanel shows correct images at TVShow level
- Bottom RSS not shown when XBMC global setting disables all RSS
- Implemented skinsetting to change global weather

Cleanup included in this pull:
- Fixed up looks of skinsettings window
- Many strings were localised
- lots of items removed that do not function anymore in Frodo. 
- debuggrid is now global so will work everywhere
- onclick does a noop instead of a -, which is deprecated
- strings were cleaned up and sorted by number

I thought it was a good idea to pull request it so you could see it before you start doing the same work again :)

Cheers!