Add Access Control

[ri0t]

A hearty portion of RBAC is being added, so we can have control over everything. Heavy in the backend but lightwight in the frontend - i.e. in terms of administration

• [x] Add roles/ownership to objects
• [x] Methods to check permission
• [x] Provisioning of roles/ownership
• [x] Upgrade all objects
• [x] Check all permissions