Create a "Validate JSON" checkobox

A user on the forums asked why it is that we don't send an error to the client for invalid JSON. My response was compatibility with Membase as well as being abe to allow users to use Couchbase as both a document and key-value store. While I certainly wouldn't advocate that we change the way we are doing things. It might be a goo idea to have a checkbox in the settings that the user can check to say that the server should return an error if they are not using valid JSON. This will allow people to put Couchbase in a full document store mode.