Bug 33478: Consider TranslateNotices when saving notice styles

Bug 33478: Consider TranslateNotices when saving notice styles

This patch ensures saving styles per notice still works as expected when the TranslateNotices system preference is enabled.

To test, enable the TranslateNotices system preference and attempt to save different CSS for each installed language for one notice. Confirm the correct CSS is saved for the correct language.

Confirm the CSS selector helpers are inserted into the textarea as expected.

Confirm the 'Apply format settings to all notices for this language' setting works, as in CSS is saved for all relevant language notices.

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>