Fix EditorBrowsableAttribute detection to apply to individual attributes.

- Prior to this change we'd return early and not generate any found descriptors if ANY property on a `TagHelper` had editor browsable never.
- This issue was hidden from tests due to us using the wrong comparer. Updated the comparer and failures occurred without the `TagHelperDescriptorFactory` change (yay).

#454

src/Microsoft.AspNet.Razor.Runtime/TagHelpers/TagHelperDescriptorFactory.cs

@@ -273,7 +273,7 @@ namespace Microsoft.AspNet.Razor.Runtime.TagHelpers
             {
                 if (ShouldSkipDescriptorCreation(designTime, property))
                 {
-                    return Enumerable.Empty<TagHelperAttributeDescriptor>();
+                    continue;
                 }
 
                 var attributeNameAttribute = property.GetCustomAttribute<HtmlAttributeNameAttribute>(inherit: false);

test/Microsoft.AspNet.Razor.Runtime.Test/TagHelpers/TagHelperDescriptorFactoryTest.cs

@@ -185,18 +185,19 @@ namespace Microsoft.AspNet.Razor.Runtime.TagHelpers
                                 assemblyName: AssemblyName,
                                 attributes: new[]
                                 {
+                                    new TagHelperAttributeDescriptor(
+                                        name: "property2",
+                                        propertyName: nameof(OverriddenPropertyEditorBrowsableTagHelper.Property2),
+                                        typeName: typeof(int).FullName,
+                                        isIndexer: false,
+                                        designTimeDescriptor: null),
                                     new TagHelperAttributeDescriptor(
                                         name: "property",
                                         propertyName: nameof(OverriddenPropertyEditorBrowsableTagHelper.Property),
                                         typeName: typeof(int).FullName,
                                         isIndexer: false,
                                         designTimeDescriptor: null),
-                                    new TagHelperAttributeDescriptor(
+
-                                        name: "property2",
-                                        propertyName: nameof(OverriddenPropertyEditorBrowsableTagHelper.Property2),
-                                        typeName: typeof(int).FullName,
-                                        isIndexer: false,
-                                        designTimeDescriptor: null)
                                 })
                         }
                     },
@@ -244,7 +245,7 @@ namespace Microsoft.AspNet.Razor.Runtime.TagHelpers
 
             // Assert
             Assert.Empty(errorSink.Errors);
-            Assert.Equal(expectedDescriptors, descriptors, TagHelperDescriptorComparer.Default);
+            Assert.Equal(expectedDescriptors, descriptors, CaseSensitiveTagHelperDescriptorComparer.Default);
         }
 
         public static TheoryData AttributeTargetData