General description on API protocol:
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-All API nodes currently use GET requests for all parameters.
+All API nodes currently use POST requests for all parameters.
All API nodes return JSON data unless explicitly noted ,
and all JSON results will contain a 'response' element.
The 'response' may be set to:
Permissions! (user/permissions?user=...)
-Change all GET to POST
-
-Implement test-tool for POST-based communication ;)
-
Improve robustness of change_pw: fetch old password for rollback/testing.
Check for locations where sql_dbexec_rows is more appropriate/correct than sql_dbexec