fixed more UI stuff
Changed definition of distance to target and simplified some sliders.
Merge conflict solve
Can now change simulation time.
Fixed bug with keep head high. Changed light position.
Multiple light sources.
Multiple light sources. (included shaders)
N_LIGHTS only set in Scene class.
Forgot the shaders. Fixed.
just making sure the sim time is being grabbed when starting the sim
mergefix
back to old mutation strength, some input experim
Merge branch 'develop' of https://github.com/kbladin/creature_evolution into develop

Conflicts:
	src/Brain.cpp
Bigger plane and printing fitness values.
Fixed bug of data not resetting
fixed my input mess-up, sorry!
Added frog.
Commented Body and Brain.
Made some comments for BulletCreature.
Commented Node class.