Change recovering and reinstall states to match the unready status

Recovering was matching failed (red led) and reinstall was matching
unknown (grey led), but these states are similar to other states that
are in unready (spinner led).
Also change reboot state to match the unready status to get the spinner
Merge pull request #1121 from vuntz/reinstall-status

Change recovering and reinstall states to match the unready status
Remove trailing whitespace
Remove "Successfully created proposal" flash

This is visually disturbing, and since it looks similar
to the "Successfully applied proposal" message we had a customer
confused by it already. Just remove it.
Add support for Windows Server 2012 R2
Merge pull request #1105 from vuntz/win2012r2

Add support for Windows Server 2012 R2
Merge pull request #1124 from dirkmueller/no_successs

No successs