* [WEBQR_SERVER,SC] Simplified parameter list for HTTP GET methods.
* [WEBQR_JS,FIX] The HTTP OPTIONS request would throw an exception in Firefox. The cause of this was that the JSON data object was not explicitly 'stringified'. Added a small comment on this with the `xhr.send/1` function.
* [WEBQR_SERVER,FIX] Added some code that should have been in the previous commit...
* [WEBQR_SERVER,EXT] Added SPARQL lookup for PUT request to find concepts. Also assert the related info on the concept.