Update < and > in error messages to not be double encoded.

NuGet.config

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <packageSources>
     <add key="AspNetVNext" value="https://www.myget.org/F/aspnetcidev/api/v3/index.json" />

src/Microsoft.AspNet.Razor.Runtime/Properties/Resources.Designer.cs

@@ -155,7 +155,7 @@ namespace Microsoft.AspNet.Razor.Runtime
         }
 
         /// <summary>
-        /// Invalid tag helper directive '{0}' value. '{1} is not allowed in prefix '{2}'.
+        /// Invalid tag helper directive '{0}' value. '{1}' is not allowed in prefix '{2}'.
         /// </summary>
         internal static string TagHelperDescriptorResolver_InvalidTagHelperPrefixValue
         {
@@ -163,7 +163,7 @@ namespace Microsoft.AspNet.Razor.Runtime
         }
 
         /// <summary>
-        /// Invalid tag helper directive '{0}' value. '{1} is not allowed in prefix '{2}'.
+        /// Invalid tag helper directive '{0}' value. '{1}' is not allowed in prefix '{2}'.
         /// </summary>
         internal static string FormatTagHelperDescriptorResolver_InvalidTagHelperPrefixValue(object p0, object p1, object p2)
         {

src/Microsoft.AspNet.Razor/Properties/RazorResources.Designer.cs

@@ -1499,7 +1499,7 @@ namespace Microsoft.AspNet.Razor
         }
 
         /// <summary>
-        /// Found an end tag (&amp;lt;/{0}&amp;gt;) for tag helper '{1}' with tag structure that disallows an end tag ('{2}').
+        /// Found an end tag (&lt;/{0}&gt;) for tag helper '{1}' with tag structure that disallows an end tag ('{2}').
         /// </summary>
         internal static string TagHelperParseTreeRewriter_EndTagTagHelperMustNotHaveAnEndTag
         {
@@ -1507,7 +1507,7 @@ namespace Microsoft.AspNet.Razor
         }
 
         /// <summary>
-        /// Found an end tag (&amp;lt;/{0}&amp;gt;) for tag helper '{1}' with tag structure that disallows an end tag ('{2}').
+        /// Found an end tag (&lt;/{0}&gt;) for tag helper '{1}' with tag structure that disallows an end tag ('{2}').
         /// </summary>
         internal static string FormatTagHelperParseTreeRewriter_EndTagTagHelperMustNotHaveAnEndTag(object p0, object p1, object p2)
         {
@@ -1515,7 +1515,7 @@ namespace Microsoft.AspNet.Razor
         }
 
         /// <summary>
-        /// The parent &amp;lt;{0}&amp;gt; tag helper does not allow non-tag content. Only child tag helper(s) targeting tag name(s) '{1}' are allowed.
+        /// The parent &lt;{0}&gt; tag helper does not allow non-tag content. Only child tag helper(s) targeting tag name(s) '{1}' are allowed.
         /// </summary>
         internal static string TagHelperParseTreeRewriter_CannotHaveNonTagContent
         {
@@ -1523,7 +1523,7 @@ namespace Microsoft.AspNet.Razor
         }
 
         /// <summary>
-        /// The parent &amp;lt;{0}&amp;gt; tag helper does not allow non-tag content. Only child tag helper(s) targeting tag name(s) '{1}' are allowed.
+        /// The parent &lt;{0}&gt; tag helper does not allow non-tag content. Only child tag helper(s) targeting tag name(s) '{1}' are allowed.
         /// </summary>
         internal static string FormatTagHelperParseTreeRewriter_CannotHaveNonTagContent(object p0, object p1)
         {
@@ -1531,7 +1531,7 @@ namespace Microsoft.AspNet.Razor
         }
 
         /// <summary>
-        /// The &amp;lt;{0}&amp;gt; tag is not allowed by parent &amp;lt;{1}&amp;gt; tag helper. Only child tag helper(s) targeting tag name(s) '{2}' are allowed.
+        /// The &lt;{0}&gt; tag is not allowed by parent &lt;{1}&gt; tag helper. Only child tag helper(s) targeting tag name(s) '{2}' are allowed.
         /// </summary>
         internal static string TagHelperParseTreeRewriter_InvalidNestedTag
         {
@@ -1539,7 +1539,7 @@ namespace Microsoft.AspNet.Razor
         }
 
         /// <summary>
-        /// The &amp;lt;{0}&amp;gt; tag is not allowed by parent &amp;lt;{1}&amp;gt; tag helper. Only child tag helper(s) targeting tag name(s) '{2}' are allowed.
+        /// The &lt;{0}&gt; tag is not allowed by parent &lt;{1}&gt; tag helper. Only child tag helper(s) targeting tag name(s) '{2}' are allowed.
         /// </summary>
         internal static string FormatTagHelperParseTreeRewriter_InvalidNestedTag(object p0, object p1, object p2)
         {

src/Microsoft.AspNet.Razor/RazorResources.resx

@@ -417,12 +417,12 @@ Instead, wrap the contents of the block in "{{}}":
     <value>Tag helpers '{0}' and '{1}' targeting element '{2}' must not expect different {3} values.</value>
   </data>
   <data name="TagHelperParseTreeRewriter_EndTagTagHelperMustNotHaveAnEndTag" xml:space="preserve">
-    <value>Found an end tag (&amp;lt;/{0}&amp;gt;) for tag helper '{1}' with tag structure that disallows an end tag ('{2}').</value>
+    <value>Found an end tag (&lt;/{0}&gt;) for tag helper '{1}' with tag structure that disallows an end tag ('{2}').</value>
   </data>
   <data name="TagHelperParseTreeRewriter_CannotHaveNonTagContent" xml:space="preserve">
-    <value>The parent &amp;lt;{0}&amp;gt; tag helper does not allow non-tag content. Only child tag helper(s) targeting tag name(s) '{1}' are allowed.</value>
+    <value>The parent &lt;{0}&gt; tag helper does not allow non-tag content. Only child tag helper(s) targeting tag name(s) '{1}' are allowed.</value>
   </data>
   <data name="TagHelperParseTreeRewriter_InvalidNestedTag" xml:space="preserve">
-    <value>The &amp;lt;{0}&amp;gt; tag is not allowed by parent &amp;lt;{1}&amp;gt; tag helper. Only child tag helper(s) targeting tag name(s) '{2}' are allowed.</value>
+    <value>The &lt;{0}&gt; tag is not allowed by parent &lt;{1}&gt; tag helper. Only child tag helper(s) targeting tag name(s) '{2}' are allowed.</value>
   </data>
 </root>