Remove extra parentheses
Update proposal screen for Stoney

Remove various syntax errors in the proposal screen,
port to the new branding and use the PFS common
code from the git repo
Remove trailing whitespace
Switch to branchless Tempest

Also update to Cirros 0.3.1 alongway.
Add support for install from packages

Put the PFS related bits into a use_gitrepo block
Update tempest config template to Icehouse
Configure testing of horizon if available
Merge pull request #80 from dirkmueller/release/stoney/master

Release/stoney/master