ACL foundation
Merge branch 'master' into acl_pg_basic
Merge branch 'master' into acl_pg_basic
Merge branch 'master' into acl_pg_basic
Disable code coverage

Some bugs in rebar?
Add id field to acl_role and acl_resource
Add basic acl-postgres
More complex type difinition for acl
Fix acl_resource <=> JSON translation
Add test for acl_resource <=> JSON
Added db-connection to acl
New list style (code conv)
Use {name, {allow, deny}} in acl_action()

This allows us to use default proplists functions,
instead of writing equivalents for third-tuples by hands.
Default policy behaviour for acl
Some basic functions for roles manip. in acl
First realization of acl:ask function
Added migration for acl
Cosmetick changes for acl.hrl
Add tests for default policy
Implemented the rest of acl functional