Fixed: Don't lowercase UrlBase in ConfigFileProvider

UrlBase should honour the case it is given.

(cherry picked from commit e1de523c89f7649e64f520b090bbdb2f56cc4b85)
(cherry picked from commit 9ccefe00951d2959ef79bdaa5731d95f97162d46)

Co-authored-by: Marty Zalega <marty@zalega.me>

src/NzbDrone.Core/Configuration/ConfigFileProvider.cs

@@ -227,7 +227,7 @@ namespace NzbDrone.Core.Configuration
                     return urlBase;
                 }
 
-                return "/" + urlBase.Trim('/').ToLower();
+                return "/" + urlBase;
             }
         }