New format_text option to exclude particular filters

The unit tests test the format_text changs quite well. The bit that needs manual testsing is the new admin settings class. Go into any plugin, and edit its settings.php file. Add some code like the example below somewhere. Go to Admin -> Notifications. Verify that you are prompted to set the new setting, and that the default is right. Change the setting and verify (by finding the setting in the admin tree) that the value was saved correctly. $settings ->add( new admin_setting_pickfilters( 'thisisatest' , 'Choose some filters' , 'This is a test' , array ( 'urltolink' => 1, 'emoticon' => 1)));