Merge branch 'master' of https://github.com/opencrowbar/core
Switch back to using the upstream activescaffold repo.

The ActiveScaffols guys took my pull request, so we no longer need to
rely on my fork of activescaffold for further development.
Merge branch 'master' of https://github.com/opencrowbar/core
note that you have to change to crowbar user
Merge pull request #80 from VictorLowther/add-referential-integrity

+2 Add real referential integrity to our database.
Make database seed loading really fully transactional.
Simplify enforce_acyclic when creating role_requires.

Instead of manually iterating over all the role_requires to find
conflicting ones, fix up the all_role_requires view to have the
functionality we need to do it in one shot.

If we find a cyclic role dependency, we will spit out all paths through
the role dependency graph that would be made cyclic.
a note to su - crowbar
Merge pull request #81 from newgoliath/master

+2 note to su to crowbar user
Merge pull request #82 from VictorLowther/simplify-role-requires-acyclic-checking

+2 Simplify role requires acyclic checking
install berkshelf in crowbar users context with rvm
add berkself gem to crowbar.yml
berkshelf license
Merge pull request #83 from newgoliath/master

+2 w/ BONUS points.  install berkshelf in crowbar users context with rvm
Have snapshot.rb take over the last remaining unique functionality in deployments.rb.
i18n-ize the system deployment description.