Lots of improvements to weapons and the GUI system.
Unfortunately, the weapon select GUI is still kaput :/
committing Wall_Sections_1.mat change
Merge remote-tracking branch 'refs/remotes/origin/Levels' into alex
Merge remote-tracking branch 'refs/remotes/origin/Rami' into alex
Merge remote-tracking branch 'refs/remotes/origin/Rami' into Levels
Merge branch 'refs/heads/Levels' into alex
Fixed some bugs with enemy health bars
Fixed ship navmesh
Added muzzle flash instantiate
Temporary fixed GUISelected weapon bug (so you can play again without spamming errors)
Improve Selected Weapon GUI + Energy Bar
Merge branch 'refs/heads/master' into alex
Merge branch 'refs/heads/master' into alex

Conflicts:
	Assets/TestProject/Scripts/GUI/HUD/GUISelectedWeapon.cs
Added basic camera shaker
Added rifle shoot sound (but sounds a bit strange to me)