Change default timezone to UTC.
FIX: attachment links in mail lacks protocol
GroupedEach helper fix for ember 1.8
Merge pull request #2922 from techAPJ/patch-2

FIX: attachment links in mail lacks protocol
Revert "GroupedEach helper fix for ember 1.8"

This reverts commit 3075ebf77c281cbb8473d0410a10a72a62cb31c0.
LOTS of changes to properly handle post/topic revisions

FIX: history revision can now properly be hidden
FIX: PostRevision serializer is now entirely dynamic to properly handle
hidden revisions
FIX: default history modal to "side by side" view on mobile
FIX: properly hiden which revision has been hidden
UX: inline category/user/wiki/post_type changes with the revision
details
FEATURE: new '/posts/:post_id/revisions/latest' endpoint to retrieve
latest revision
UX: do not show the hide/show revision button on mobile (no room for
them)
UX: remove CSS transitions on the buttons in the history modal
FIX: PostRevisor now handles all the changes that might create new
revisions
FIX: PostRevision.ensure_consistency! was wrong due to off by 1
mistake...
refactored topic's callbacks for better readability
extracted 'PostRevisionGuardian'
fix the build
FEATURE: admin end point to sync sso /admin/users/sync_sso

Must be admin to invoke (api is fine too), uses same sso payload nonce is ignored
PERF: use handlebars rendering for user list

this shave topic list rendering on local down from 140ms to 100ms
Merge pull request #2921 from techAPJ/patch-1

FIX: email replies should not be accepted for deleted topics
new user profile page
move column to better location
PERF: split out category column rendering
PERF: remove a binding we do not need
Merge pull request #2924 from awesomerobot/master

new user profile page
PERF: move activity-column to handlebars
correct coldmaps
release notes now includes lines from comments with a blank like after the first one
Merge pull request #2925 from mcwumbly/release-notes

Includes lines in release notes from comments with a blank like after the first one
REVERT commits for raw handlebars rendering. We need to create a
separate branch and discuss issues of this approach.