* Changed comment symbol in declaration_public

* Add folders: Declaration/, DemoData/ and Docs/ with user-manual source.
* Minor fixes in User Manual.: 2.01-->2.0.x, "executive"-->"executable".
* Add BUILD.md, README.md, CHANGES.md, COPYING.txt.
* Update Release-procedure in BUILD.md.

AMIDST Switch Config-setings to JSON, separate config/ folder (recreated on startup) from Declaration/ one

* cSettings: objectify IO of settings, use try/catch for its error handling.
* Use json-schema to check settings.
* Open editor for text-files with System.Diagnostics.Process.Start instead of Shell and use Path.
* Utility routines for formatting msgs, joining file-paths.
* Add reference to Json.net dll.