db:migrate to latest version
Adds permissions for agents to access/aid users
Removing ability for sysadmin to handle travelers for now
Removes the link to define undefined keys.
Bump version to 0.19.0
Show more detailed errors in more environments.
Merge branch '0.19' of github.com:camsys/oneclick into 0.19

Conflicts:
	app/models/ability.rb
Merge branch '0.19' of github.com:camsys/oneclick into 0.19