Fixed: Parsing of Ger.Dub releases as German

Closes #4538

src/NzbDrone.Core.Test/ParserTests/LanguageParserFixture.cs

@@ -53,6 +53,7 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("Title.the.Series.2009.S01E14.German.HDTV.XviD-LOL")]
         [TestCase("Title.the.Series.S04E15.Brotherly.Love.GERMAN.DUBBED.WS.WEBRiP.XviD.REPACK-TVP")]
         [TestCase("The Series Title - S02E16 - Kampfhaehne - mkv - by Videomann")]
+        [TestCase("Series.Title.S01E03.Ger.Dub.AAC.1080p.WebDL.x264-TKP21")]
         public void should_parse_language_german(string postTitle)
         {
             var result = Parser.Parser.ParseTitle(postTitle);

src/NzbDrone.Core/Parser/LanguageParser.cs

@@ -17,7 +17,7 @@ namespace NzbDrone.Core.Parser
                 new RegexReplace(@".*?[_. ](S\d{2}(?:E\d{2,4})*[_. ].*)", "$1", RegexOptions.Compiled | RegexOptions.IgnoreCase)
             };
 
-        private static readonly Regex LanguageRegex = new Regex(@"(?:\W|_)(?<italian>\b(?:ita|italian)\b)|(?<german>german\b|videomann)|(?<flemish>flemish)|(?<greek>greek)|(?<french>(?:\W|_)(?:FR)(?:\W|_))|(?<russian>\brus\b)|(?<hungarian>\b(?:HUNDUB|HUN)\b)|(?<hebrew>\bHebDub\b)|(?<polish>\b(?:PL\W?DUB|DUB\W?PL|LEK\W?PL|PL\W?LEK)\b)|(?<chinese>\[(?:CH[ST]|BIG5|GB)\]|简|繁|字幕)|(?<bulgarian>\bbgaudio\b)",
+        private static readonly Regex LanguageRegex = new Regex(@"(?:\W|_)(?<italian>\b(?:ita|italian)\b)|(?<german>german\b|videomann|ger[. ]dub)|(?<flemish>flemish)|(?<greek>greek)|(?<french>(?:\W|_)(?:FR)(?:\W|_))|(?<russian>\brus\b)|(?<hungarian>\b(?:HUNDUB|HUN)\b)|(?<hebrew>\bHebDub\b)|(?<polish>\b(?:PL\W?DUB|DUB\W?PL|LEK\W?PL|PL\W?LEK)\b)|(?<chinese>\[(?:CH[ST]|BIG5|GB)\]|简|繁|字幕)|(?<bulgarian>\bbgaudio\b)",
                                                                 RegexOptions.IgnoreCase | RegexOptions.Compiled);
 
         private static readonly Regex CaseSensitiveLanguageRegex = new Regex(@"(?:(?i)(?<!SUB[\W|_|^]))(?:(?<lithuanian>\bLT\b)|(?<czech>\bCZ\b)|(?<polish>\bPL\b)|(?<bulgarian>\bBG\b))(?:(?i)(?![\W|_|^]SUB))",