Never allow empty episode formats to be saved

src/NzbDrone.Api/Config/NamingModule.cs

@@ -37,12 +37,8 @@ namespace NzbDrone.Api.Config
             Get["/samples"] = x => GetExamples(this.Bind<NamingConfigResource>());
 
             SharedValidator.RuleFor(c => c.MultiEpisodeStyle).InclusiveBetween(0, 3);
-
-            SharedValidator.When(spec => spec.RenameEpisodes, () =>
-            {
-                SharedValidator.RuleFor(c => c.StandardEpisodeFormat).ValidEpisodeFormat();
-                SharedValidator.RuleFor(c => c.DailyEpisodeFormat).ValidDailyEpisodeFormat();
-            });
+            SharedValidator.RuleFor(c => c.StandardEpisodeFormat).ValidEpisodeFormat();
+            SharedValidator.RuleFor(c => c.DailyEpisodeFormat).ValidDailyEpisodeFormat();
         }
 
         private void UpdateNamingConfig(NamingConfigResource resource)

src/NzbDrone.Integration.Test/NamingConfigTests.cs

@@ -81,10 +81,8 @@ namespace NzbDrone.Integration.Test
             config.StandardEpisodeFormat = "";
             config.DailyEpisodeFormat = "";
 
-            var result = NamingConfig.Put(config);
-            result.RenameEpisodes.Should().BeFalse();
-            result.StandardEpisodeFormat.Should().Be(config.StandardEpisodeFormat);
-            result.DailyEpisodeFormat.Should().Be(config.DailyEpisodeFormat);
+            var errors = NamingConfig.InvalidPut(config);
+            errors.Should().NotBeEmpty();
         }
 
         [Test]