Add Regular Expression Custom Format translation

(cherry picked from commit 9f50166fa62a71d0a23e2c2d331651792285dc0e)

Closes #3256

src/NzbDrone.Core/CustomFormats/Specifications/RegexSpecificationBase.cs

@@ -21,7 +21,7 @@ namespace NzbDrone.Core.CustomFormats
         protected Regex _regex;
         protected string _raw;
 
-        [FieldDefinition(1, Label = "Regular Expression", HelpText = "Custom Format RegEx is Case Insensitive")]
+        [FieldDefinition(1, Label = "CustomFormatsSpecificationRegularExpression", HelpText = "CustomFormatsSpecificationRegularExpressionHelpText")]
         public string Value
         {
             get => _raw;

src/NzbDrone.Core/Localization/Core/en.json

@@ -151,7 +151,7 @@
   "Columns": "Columns",
   "CompletedDownloadHandling": "Completed Download Handling",
   "Component": "Component",
-  "Conditions": "'Conditions'",
+  "Conditions": "Conditions",
   "Connect": "Connect",
   "ConnectSettings": "Connect Settings",
   "ConnectSettingsSummary": "Notifications, connections to media servers/players and custom scripts",
@@ -181,6 +181,8 @@
   "CustomFormatScore": "Custom Format Score",
   "CustomFormatSettings": "Custom Format Settings",
   "CustomFormats": "Custom Formats",
+  "CustomFormatsSpecificationRegularExpression": "Regular Expression",
+  "CustomFormatsSpecificationRegularExpressionHelpText": "Custom Format RegEx is Case Insensitive",
   "CutoffFormatScoreHelpText": "Once this custom format score is reached Readarr will no longer grab book releases",
   "CutoffHelpText": "Once this quality is reached Readarr will no longer download books",
   "CutoffUnmet": "Cutoff Unmet",