Frontend for Edge Table Configuration

The Agasti schema has been designed to be incredibly flexible and configurable by the end user, allowing for customization to meet very specific needs. To take full advantage of this design, a front-end is needed to define various definition/edge/configuration tables. The Admin module would be the best place to keep these (and the admin menu would be the best place to link to them), unless they grow so numerous that they need their own module. In short, pages that allow administrative users to change or add data-points like name-types, email-types, phone-type, address-type. Currently, this can only be done by editing YML files of modifying the database directly.