Initial wizard implementation

Submit and cancel buttons need to get tweaked to carry different labels, wizard should work as it is now,
submit button should lead to next wizard step. I think it keeps redirecting to first step because
in update action we need to use render_wizard @deployment which depends on OpenstackDeployment model existence.

Added staypuft layout that enables to add custom stylesheets, js etc.
First orchestration bits Add Host::Create action
Initial Impl of DynFlow PuppetRun Action
Namespacing actions in Staypuft module
Add AsCurrentUser middleware to PuppetRun action
Add db/seeds.rb to enable puppetrun
Use Actions::Base as a ancestor instead of Dynflow::Action

to enable humanized description of tasks on path
https://foreman.example.com/foreman_tasks/tasks
Merge pull request #7 from jtomasek/wizard

Initial wizard implementation
Merge pull request #3 from pitr-ch/orchestration

First orchestration bits
changed new deployments link into a btn
Merge pull request #10 from ohadlevy/btn

changed new deployments link into a btn