Only create a new notification on update of an annoucement if user allows it
Merge pull request #215 from ulsdevteam/add-announcement-notification-option

*6395* Only create a new notification on update of an annoucement if user allows
*8809* Fix static pages locale chooser
*8785* Add setting to config files
*8785* Submodule changes track ##beghelli/8785-fix##