make code climate a bit happier
minor refactoring
Extract methods to improve flog score of TopicView
Generate avatars with transparent background

Generate avatars with transparent background (for .png images) or with white background (for others).
FIX: Respect protocol relative URLs in email styling
FIX: Displaying actions
Merge branch 'master' of github.com:discourse/discourse
FIX: Don't select columns if we don't have to.
FIX: Direct link to Avatar
Screw it, don't choose columns.
FIX: New avatar regression with mixed case email addresses.
only the host part of an email address is case insensitive
Replace Clockwork with Sidetiq
Add ScreenedUrl. Rename BlockedEmail to ScreenedEmail.
Merge pull request #1330 from ZogStriP/emails-can-be-mixed-case

only the host part of an email address is case insensitive
Finish renaming blocked emails to screen emails
Merge pull request #1328 from abbat/patch-1

Generate avatars with transparent background
FIX: performance regression on activity streams
Merge pull request #1317 from novemberkilo/master

Extract methods to improve flog score of TopicView
Merge pull request #1309 from stephankaag/sidetiq

Replace Clockwork with Sidetiq