Updated first person view hand model for Insurgent Heavy to match third person view model.

Added detail to Insrugent Heavy legs and boots to improve realism.

Modified materials files to be compatible with most recent release of game client (3/18/17).

*Potential fix for missing Fighter skin textures

*Attempt at fixing missing texture in public games

*adjustments made to Machine Gunner texture

*Modified Sapper in order to match new default sleeve color.
*Modified sleeve color for Heavy skins to match Sapper/Bomber.

*fixed texture bug

*Recolored attachments
*Recolor for Heavy Bomber Skin
*Touch ups to skins to account for new attachment skin