add profile option for edit history, visible only when edit history is disabled globally.
discourse#2591
add spec for public edit history
ES6: Remove dynamically generated static routes. They were causing lots
of confusion and bugs.
Seed the Admin Quick Start Guide topic last so it appears as the newest topic
FEATURE: allow staff to send multiple invites to same email
export the Button class so that we can use it in plugins
Merge pull request #2603 from techAPJ/patch-1

FEATURE: allow staff to send multiple invites to same email
FIX: Was not filtering correctly on the user's stream
FIX: Display proper error message when changing a trust level fails
FIX: User email was changing in the HTML  when you invited a user
FIX: Response is no longer forbidden with JSON errors for changing trust
level.
Add Access-Control-Allow-Credentials to the CORS headers.
TRIVIAL: use class instead of id for the 'topic-list'
FIX: keep correct ordering on admin badges
FIX: enter on invite to PM was broken
FEATURE: allow title overridable
FEATURE: clean up badges admin
FEATURE: setting suppress reply when quoting
BUGFIX: don't move selection when nothing is selected