Merge pull request #5433 from sbwalker/dev

allow specific time zones to be excluded

Oqtane.Client/Services/TimeZoneService.cs

@@ -37,6 +37,9 @@ namespace Oqtane.Services
                     displayname =  displayname.Replace("_", " ").Replace("/", " / ");
                 }
 
+                // time zones can be excluded from the list by providing an empty translation in the localization file
+                if (!string.IsNullOrEmpty(displayname))
+                {
                     // include offset prefix
                     var offset = tz.GetUtcOffset(Instant.FromDateTimeUtc(DateTime.UtcNow)).Ticks;
                     displayname = "(UTC" + (offset >= 0 ? "+" : "-") + new DateTime(Math.Abs(offset)).ToString("HH:mm") + ") " + displayname;
@@ -47,6 +50,7 @@ namespace Oqtane.Services
                         DisplayName = displayname
                     });
                 }
+            }
 
             return timezones;
         }