Started work on structure of RenderSystem.
Added shader and program classes.
Added WavefrontMesh class.
Added camera objects from AFK.
Added getters to Camera interface.
Actually made mesh draw when draw is called.
Moved camera logic completely into systems.
Added Sun component, to be used as a global.
Implemented resource manager.
Added test app for Athens.
Fixed up all the little kinks in athens.
Fixed a couple of bugs in EMS.
Replaced renderThread's fixed timing with variable timing.