Avoid bleeding sensitive information into logs.
Should never have been commited in this branch.
Switch to std::string from CStdString.
USERNAME and PASSWORD for CURL::getRedacted.
Cosmetics.
Use std::string, and fix whitespace contamination.
Fixes for stack URLs.

Includes replacing std::string for CStdString, for the callstack below
CURL::getWithoutUserDetails()
Checked all network filesystems for unsecure logging.

Pending:
 -Remove use of advancedsettings in Application.
 -Remove changes to advancedsettings.
 -Code verification for all changed files, check all calls to CLog.
Remove dependency on advancedsettings.unsecurelogging.
Remove unsecurelogging from advancedsettings.
Code review of files in filesystem.
All instances may not have been discovered.
Terser variable naming.