save_strings() is called as a POST request, no need to check GET parameters.

String Create/Edit function & conditional showing of delete button.

Add individual string delete

Don't blindly assign new renderings of strings as 'public' but use match the existing events.

Better order for new buttons on the admin>prefs>langs page.

Add export/delete to admin>prefs>languages. Pull common language code into lib_lang.php.

Clean-up braces and indentation. Added some phpdoc sections.

First cut at a string/snippet editor

Add callback to head routine to grab extra lines from plugins etc.