Issue #2243439 by amitgoyal, jonreid, mark.labrecque, mpv, pwolanin, scor, cilefen, sun: Fix up docs about config file/database locations in settings.php and READMEs in directories
Issue #1956782 by bdimaggio, tanmayk, chertzog: Document parameter better in xmlrpc_server
Issue #2262247 by amitgoyal, pwolanin: Document member variables in AdminTest class
Issue #1674870 by amitgoyal, theemg, pwieck, xjm: Fix up docs for node_access_test module
Issue #2260043 by t0xicCode, amitgoyal: Remove lingering references to obsolete field crud and attach topics and functions