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.