Handle title matching priorities (official, main, etc)

Fixes #4
Merge branch 'master' of https://github.com/Ley21/MediaBrowser.Plugins.Anime

Conflicts:
	MediaBrowser.Plugins.Anime.Tests/AniDbTitleMatcherTests.cs
	MediaBrowser.Plugins.Anime/Providers/AniDB/AniDbTitleMatcher.cs