Fixed: Improved parsing of Web releases

Fixes #6371

bonus: refactored webdl parsing to be cleaner

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

@@ -181,6 +181,8 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("Movie.Name.2020.1080p.AMZN.WEB.", false)]
         [TestCase("Movie Title - 2020 1080p Viva MKV WEB", false)]
         [TestCase("[HorribleSubs] Movie Title! 2018 [Web][MKV][h264][1080p][AAC 2.0][Softsubs (HorribleSubs)]", false)]
+        [TestCase("Movie.Title.2020.MULTi.1080p.WEB.H264-ALLDAYiN (S:285/L:11)", false)]
+        [TestCase("Movie Title (2020) MULTi WEB 1080p x264-JiHEFF (S:317/L:28)", false)]
         public void should_parse_webdl1080p_quality(string title, bool proper)
         {
             ParseAndVerifyQuality(title, Source.WEBDL, proper, Resolution.R1080p);

src/NzbDrone.Core/Parser/QualityParser.cs

@@ -16,7 +16,7 @@ namespace NzbDrone.Core.Parser
 
         private static readonly Regex SourceRegex = new Regex(@"\b(?:
                                                                 (?<bluray>M?BluRay|Blu-Ray|HDDVD|BD(?!$)|UHDBD|BDISO|BDMux|BD25|BD50|BR.?DISK)|
-                                                                (?<webdl>WEB[-_. ]DL|WEBDL|AmazonHD|iTunesHD|MaxdomeHD|NetflixU?HD|WebHD|[. ]WEB[. ](?:[xh]26[45]|DDP?5[. ]1)|[. ](?-i:WEB)$|\d+0p(?:[-. ]AMZN)?[-. ]WEB[-. ]|WEB-DLMux|\b\s\/\sWEB\s\/\s\b|AMZN[. ]WEB[. ])|
+                                                                (?<webdl>WEB[-_. ]DL(?:mux)?|WEBDL|AmazonHD|iTunesHD|MaxdomeHD|NetflixU?HD|WebHD|[. ]WEB[. ](?:[xh]26[45]|DDP?5[. ]1)|[. ](?-i:WEB)$|(?:\d{3,4}0p)[-. ]WEB[-. ]|[-. ]WEB[-. ]\d{3,4}0p|\b\s\/\sWEB\s\/\s\b|AMZN[. -]WEB[. -])|
                                                                 (?<webrip>WebRip|Web-Rip|WEBMux)|
                                                                 (?<hdtv>HDTV)|
                                                                 (?<bdrip>BDRip)|