MP1-4208-Fixed nfo file import does not execute usergroup rule
* added additional tags for user groups (rule, description image[on import only])
MP1-4249-Fix for slow videodatabase query in case of many files in one directory
* also optimized GetFiles and SetIMDBDMovieDetails query
Merge remote-tracking branch 'remotes/upstream/master' into 1.5.0Fork

Conflicts:
	mediaportal/Databases/Video/SqlLite/VideoDatabaseSqlLite.cs
Merge remote-tracking branch 'remotes/upstream/MP1-4249-Many_files_in_directory_cause_slow_videodatabase_response' into 1.5.0Fork