Close notifications on user action properly.

fixes #3105, refs #3012
- Add additional closeAll() calls where users interact with data
Change text on leave modal cancel button

issue #3106
Show correct post notificatons based on status.

closes #2850
- Add messageMap from old admin
- Add two methods to pick the correct notification based on prev status and current status
Update Ghost-UI version to 0.8.1

References #3102 #2491
Merge pull request #3116 from PaulAdamDavis/master

Update Ghost-UI version to 0.8.1
New setup screen for blog installation.

fixes #3072
- Change router to handle /ember/setup/
- Adjust doSignup to also handle setup
- Adjust tests and add new where necessary
- Add setup controller, setup validation, setup route
- Adjust casper emberSetup to handle new setup
Merge pull request #3102 from halfdan/3072-setup-screen

New setup screen for blog installation.
Switching the tests to use ember admin by default

ref #3060

- Some of our tests use the old signin/signout as part of the setup/teardown process. The old stuff is going away, so this PR switches everything over to use the new admin by default.
- There wil be a further PR to remove the old stuff completely soon.
Merge pull request #3117 from ErisDS/switch-tests

Switching the tests to use ember admin by default
Merge pull request #3113 from ErisDS/issue-3106

Change text on leave modal cancel button
Merge pull request #3111 from halfdan/3105-notifications

Close notifications on user action properly.
Merge pull request #3115 from halfdan/2850-post-notifications

Show correct post notificatons based on status.
Ember post order matches server post order

fixes #3008

- this effectively breaks the sort order on the client, because the serverside order is marginally broken.