changed: RA map PLUTO

-- fixed # 3573
-- removed MISS
-- changed MSLO so that it is possible to possess multiple ones.
-- added additional MSLO to the map.
-- removed a couple of oil derricks.
changed: RA map ARTEMIS

-- minor changes
More improvements to nod01
tweaks and such, nod01
Merge pull request #3593 from wuschel/bleed

Fixes #3573 and updates maps Pluto/Artemis a little.
corrected lose fmv nod01
fixed strange indentation nod01
Merge pull request #3596 from pchote/fog-visibility-freezing

Fog visibility freezing fixes #3206 et al
Fixed nod01, not being able to lose mission
Merge pull request #3595 from dan9550/td_nod_campaign

More improvements to nod01
Add WAngle.ArcTan().
Add probabilistic sampling functions to WRange, WVec.
Convert ProjectileArgs to world coords.
Split TeslaRenderable out from TeslaZap.
Rewrite GravityBomb with world coords and gravity.
Rewrite bullets using world coords and improved trails.
Convert Missile to world coordinates. Fixes #3347. Closes #3434.
Remove obsolete Gauss1D/Gauss2D functions.
Add WVec.ToCVec() extension method.
Remove PSubVec from AttackWander.