URL-parsing+rendering part of the first two new convops ready

### Description
This PR implements the parsing of URL plus the rendering in XML and JSON of the first (/v1/contextTypes) of the batch of new convenience operations. A second new conv op is prepared for but not terminated (/v1/contextTypes/{entityType})

What is missing is the mongo part (see '#if 0' in serviceRoutines).

I added a parameter for orionCurl:  --noPayloadCheck.

Reason: if the render renders incorrect json, the output from the json-beautifier is ... nothing.
There is no way to debug this, so I added this option to at least see what was rendered, in order to fix the problem.