weapons.yaml update for CNC

See https://github.com/OpenRA/OpenRA/pull/2655 for details and rationales.
vehicles.yaml update

see https://github.com/OpenRA/OpenRA/pull/2671 for details and rationales
blue tiberium fix. crate fix (no mcvs)

Blue tiberium now poisons infantry
Crates no longer provide MCVs
levelup crate removed
crate lifetime increased
Merge pull request #2724 from psydev/patch-4

system.yaml: blue tiberium fix; crate fix (no mcvs)
Merge pull request #2722 from psydev/patch-2

vehicles.yaml update; a few smaller updates.
scaled back tank firing rate a bit

Originally I increased the tank firing rate by 2x, but I think 1.5x makes more sense. (Now fairly comparable to RA values). Going to leave it here.
Reduced Artillery damage vs. wood from 75% to 50%.
Slight tweak to recon bike damage 
Slight tweak to Stealth Tank damage vs. heavy armor
fixed APC gun mistkae -- now shoots at air too
Merge pull request #2721 from psydev/patch-1

weapons.yaml update for CNC
Added Mission Survival_01
Made Fixes

Made Fixes
Added Difficulty and Music, Made Fixes

Added Difficulty and Music, Made Fixes;
Almost finalized.
fixup Survival01

- line endings
- add to project file
- compile error around ObjectivesUpdatedEventHandler
- open areas on terrain
cleanup Survival01

- added license reminder
- spaces to tabs
- remove unneeeded usings
- lower-space camelCase for local variables
- add license reminder
- fix difficulty setting, added Easy
- stop ticking the timer when won the mission
- use MissionUtils to cap soviet ore