UI: Builder should better filter ARI dropdowns

[DavidEdell]

Currently we have a simple field that autocompletes against a simple string match.

To improve usability:

• UI should provide the ability to filter by type (ie: RPT, CONST, etc.)
• UI should automatically restrict listing to appropriate filters when editing a field restricted by the ADM to be a specific type
• Builder should be smart enough to prevent the user from generating invalid ARIs for most basic use cases