Consistency tweaks
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
Merge branch 'ojs-stable-2_4' of https://github.com/pkp/ojs into uls-install