Eliminate the ')' that replaced empty strings; replace it with '""'.  Build in _groupvalue= processing

* fixing some URLs and adding some more in (especially to the OPEN VSX Registry)
* changed "source build" to come later

Some directory renaming to avoid confusion with cbl-gdb.  References to Symas/Camelian changed to COBOLworx.

Version 2.1.1 -- improved Environment handling when starting a new project needing a launch.json file