Manual corrections to coordinates sent to the RDF server

[jmvanel]

Typically , the GPS precision is around 3 meters , which is not enough for gardens, etc.

So, on a computer, the user will drag the point to the desired position, and coordinates are sent to the RDF server.
For this the standard protocol is SPARQL 1.1 Graph Store HTTP Protocol with HTTP PUT , see
https://www.w3.org/TR/sparql11-http-rdf-update/#http-put

Coherent with semantic_forms , the graph in which a new triple

 <URI1> geo:lat 12.345 .

will be sent by Graph Store HTTP Protocol will be <URI1> itself .

For other servers, there is a need to specify i which graph to send the location triples. One can use a pseudo HTTP parameter graph= .