Merge branch 'common-interfaces'

This breaks compatibility with aMPdroid 1.0.x.

Conflicts:
	Services/MPExtended.Services.UserSessionService.Interfaces/IUserSessionService.cs
	Services/MPExtended.Services.UserSessionService.Interfaces/MPExtended.Services.UserSessionService.Interfaces.csproj
	Services/MPExtended.Services.UserSessionService/UserSessionProxyService.cs
	Services/MPExtended.Services.UserSessionService/UserSessionService.cs
Merge branch 'master' into meta-service

Conflicts:
	MPExtended.sln
	Services/MPExtended.Services.TVAccessService/MPExtended.Services.TVAccessService.csproj
Installer: Also install recently added binaries

- Install the MPExtended.Services.Common.Interfaces.dll file
- Install the MyFilms plugin
-
WebMP: Move chosen to the Skins/aredon directory
Configurator: Instantly save new accounts
MAS: Allow quiet conversion of WebActor and WebGenre to strings
WSS: Add a <noResize> option to VLC and ffmpeg
UacServiceHandler: Do not stop the service twice

Also check if service is running before stopping it

Thanks to DieBagger for noticing this & proposing a fix.
WebMP: Allow loading TV-Series posters and banners in the skin

Also default to showing posters instead of fanart, as fanart isn't always available.
WebMP: Generalize image-loading code
WebMP: Support setting the default language in the configuration file
TAS: Remove the WebCount class

Replace it with the common WebIntResult class
WSS: Clean imagecache on each upgrade

Old MPExtended versions sometimes put garbage in the cache, and we
don't want to still serve the garbage when the bug has been fixed.
MyFilms: Shut up if there is no valid MP configuration file
WebMP: Only allow scheduling on channels visible in the TV guide
Merge branch 'rename-webcount-webintresult'
MAS: Improve error message when sorting fails
MPTVSeries: Do not crash when there are series without episodes in the database
WebMP: Log request and exception in single message

Separate log messages could cause race conditions and makes it hard to link
the exception to an request when there are multiple exceptions in a row.
MetaService: Replace WebBool with WebBoolResult from common interfaces