Add 'invite only' site setting
Hide registration on login modal if 'invite only'
Silently fail if user tries to sneak in

When 'invite only' is enabled, there's no way for a user to create an
account unless they try and sneak in by POSTing to /users/. We will
silently fail if this happens.
Disable OmniAuth account creation if 'invite only'
Don't require authentication for invites
Use PostDestroyer when deleting all of a user's posts; deleting a post removes its flags and resets its flag counts
Show dashboard warning when favicon and/or logo urls contain the same filename as the shipped defaults
Make default_logo_check more smarter
Better HTML emails, smarter email digests, new email section in admin with digest preview
FIX: HTML email should use image_tag to get the correct path to the image
FIX: Again, try to get a flexible absolute logo_url
add edit hint to "no topic definition"
Version bump to v0.9.2.5
Allow images in the daily digest for top scoring posts
Merge pull request #964 from chrishunt/exclusive-club

Add 'invite only' site setting
FIX: Javascript errors when navigating to some topics
keep /srv/status exposed
Temporarily roll back ember rc5. We identified some things we need to fix.