Fixed #22493 - Added warnings to raw() and extra() docs about SQL injection

Thanks Erik Romijn for the suggestion.
Fixed #22422 -- Moved information about the application loading process to refs/applications.txt.
Fixed #22504 -- Corrected domain terminology in security guide.

Thanks chris at chrullrich.net.
Fixed PEP8 errors in compilemessages
Fixed #22328 -- Added --exclude option to compilemessages

Added --exclude option to compilemessages to enable exclusion of
specific locales.
Added unit tests for --exclude option of compilemessages

Refs #22328
Added documentation for --exclude option of compilemessages

Refs #22328
Added myself to AUTHORS file
Added --exclude option to makemessages

Added --exclude option to makemessages to enable exclusion of
specific locales.

Refs #22328
Added unit tests for --exclude option of makemessages

Refs #22328
Added documentation for --exclude option of makemessages

Refs #22328