More i18n refactoring
On creation forms, default new item's visibility to that of their parent (closes #110).
Tiny messages fix
Fix inexplicable but unsurprising breakage in annotation JS and highlight for list fields (closes #259)
Extract linking code to a helper
Make admin linking a bit more flexible
Consolidated pagination view partials
Ensure watched items are always available for search/list views (fixes #268)
Don't send users to the portal from the admin activity page
Various minor improvements to admin pages
Show a link to the full event list on the admin welcome page
Put a link to the admin site in the portal header (for staff)
Merge branch 'master' into play-2.3
Update play2-auth dep