Add new ignore options.
Revert "Textual alert preferences now manage behavior of the dock icon's bounce."

Gremlins.

This reverts commit 151627e0360431917ab696abe29a6775de1013c0.
Merge ssh://gh/Codeux/Textual
Backend to adding Bounce Dock Icon to alert preferences.
The visible UI changes for adding Bounce dock icon as an Alert Preference