Add MetadataToHttpResponseAttribute and incorporate into BreezeControllerAttribute
New attribute converts string output of a Metadata method to HTTP response with a string content (reverse-merged from commit fbf66c0a44c61077222ae351e5ac71973c25877a)
Add MetadataToHttpResponseAttribute and incorporate into BreezeControllerAttribute
New attribute converts string output of a Metadata method to HTTP response with a string content