Added Giant Sky Letters

In case anyone was wondering which way was north, like I was.
Cinematic Overhaul and Terrain update.
Put Down Cars for Side Mishun

Wasn't sure how many cars you wanted since your documentation didn't
specify where or how many to place.
too much in 1 commit for title

tons of camera work, on almost all matinees
terrain
fog
level 1 stuff
lighting work
and brain farts.
Side Mission assets

Put placeholders/assets for assigned Side Missions. Organized them into
personal SM folder
Merge branch 'master' into DesignTeam
Merge branch 'master' into iss175