rProtect

1. The terminal view update function should no longer be called unless the terminal needs the RT (is in view and radius)

1. Fixed flashlight and crosshair flickering

1. Terminals were still displaying the map RT at a distance; that should be fixed now

1. Terminals no longer display the RT on the model if there was a regular RT camera on the map
2. Fixed intermittent sort order error in scanner

1. Fixed problem with scanner text alerts
2. Further optimized the static drawing function

1. Added concommand rprotect_getposang to make getting positions and angles for permanent cameras and terminals easier
2. Added step-by-step instructions on adding permanent cameras and terminals to the README

1. Fixed cameras viewing through walls when pressed against them
2. Made permanent cameras and terminals immovable

Initial version.