removed templates/baseGame/game/data/art as it's a copy of /images
removed templates/baseGame/game/data/scripts/guis as it's a copy of ../gui
moved fileDialog.cs to /ui/gui
remove duplicate scripts under /ui/scripts that are in /ui/gui already
ForcedMaterialMeshMgr tweaked to allow proper setting of override material
Ongoing WIP of update/fixing of options menus
WIP of expanded visualizers, including material complexity viz
Adds no-pie flag when compiling on linux with non-clang compilers
Adds sanity check to editing of gameasset script action in asset browser
Updates module template file
Updates visualizers
Fixes checking of popup menu items
Adds stub for TerrainMaterialAsset