Add example registration ctlr and fix bugs in models and libs
Finally fix bug in lib ICF_Form_validation with non-existing variable $module on ext-callbacks
Update module acl to work with user-registration
Update lib acl/Acl, add acl/Acl::user_role() to get a user's role
Add lib Curl from philsturgeon to repo
Add first commit of oauth2 lib
Update oauth/Provider to match file layout
Add index.html for forbidden access to lib oauth
Update .gitignore to ignore oauth-config
Add sample config oauth/oauth
Update provider oauth/Twitter
Merge branch 'feature/oauth2' into develop
Merge branch 'develop' into feature/users
Update migrations of module users to DB naming conventions
Update models of module 'users' to match DB naming convention