decide which mirror to choose locally and display result

closes #3904
add Tiberian Sun refinery
add Tiberium to Tiberian Sun
remappable resource types
Slight buff HeliGun vs. light

Apache, for all its greatness, doesn't do very well at one of the things it's supposed to do well, namely take out light vehicles quickly (humvee, artillery, MLRS, etc.). Apache is required for Nod as a reliable way to take out MLRS, but currently it doesn't do enough damage to take it out with its entire payload (which takes 4 seconds to unload, to boot). A single Apache should be able to destroy an MLRS, if it gets the chance.

If anyone thinks the Apache needs nerfing, I would suggest looking in other areas besides its damage vs. light armor. 

Also, does anyone object to removing the AG/AA distinctions for helicopters? They don't seem needed anymore.
fixing some trees

A couple of trees have a footprint that is too big. It looks like you should be able to drive by them, but you can't. They have been set overly-large.
fixing tree cluster

This tree cluster looks like it should be passable through in this cell. Looks fine in testing, even though looked like it might be wrong in map editor.
closes #3091 Have Helis take off after repair/rearm
Merge pull request #5258 from psydev/patch-4

fixing some trees
Merge pull request #5250 from JordanGlue/bleed

Have Helis take off after repair/rearm
Update Command.cs

WRange is actually a 1D world distance with 1024 units = 1 cell.
Fixing Helis taking off after rearmed but before repaired
Merge pull request #5259 from JordanGlue/bleed

Fixing Helis taking off after rearmed but before repaired
port Tao.OpenAl to OpenTK.Audio.OpenAL
StyleCop
Fixed removal of winforms for x86
Merge pull request #5155 from Mailaender/ts-tiberium

Added Tiberium crystals and refinery to Tiberian Sun
Merge pull request #5254 from psydev/patch-3

buff HeliGun vs. light armor 50% -> 75%
port Tao.OpenGl to OpenTK.Graphics.OpenGL and avoid Arb

closes #4540
only query for the extension we need