Migrate most Crowbar framework setup tasks out of Chef.
Move chef package requirements into the Chef barclamp.

Leave the gems here for now, though, since we have not
stripped Chef out of the base Crowbar webapp.
Debug crowbar rake tasks for now.
Ditch more stuff that we don't care about for chefless crowbar.
Fixup syntax error.
Have import_template respect natively-packaged barclamps.
Make barclamp model actually work in production
Tiny fixups to make 01-crowbar-rake-tasks.install actually work.
Lift the barclamp templates out of the chef directory
Fix up barclamp import to work with the simplified barclamp install layout.
Zap instances from the crowbar template for now.
Comment out import of network thingies.
Oops. fix typo in 01-crowbar-rake-tasks.install.
Do not mention rails settings anymore.

They stopped being meaningful when we stopped using phusion.
Tweak install parameters for crowbar.
Ditch rabbitmq.
Don't redo package installation if we are installing from native packages.
Move cookbooks to the chef barclamp.
Add more packages to required_pkgs for crowbar.
Fix conditional install of packages for ubuntu.