Delicate UI - HUD, F4, Scoreboard

HUD Changes

1. Implemented and slightly re-skinned darkrp admintellall while keeping its original functionality.
2. Implemented support for _Notify being unhandled.

F4 Menu Changes

1. Fixed a bug with the model selector, it'll now allow you to select a model if the selector interface was open prior to pressing F4.

File Structure Changes

1. Implemented server-side support for darkrp admintellall.