more changes
	new file:   eZLib/nbproject/configs/FluidResistance.properties
	modified:   eZLib/src/eZLib/Physics/Body.java
	modified:   eZLib/src/eZLib/Physics/FluidResistance.java
	modified:   eZLib/src/eZLib/Physics/Friction.java
	renamed:    eZLib/src/eZLib/Physics/Friction.java -> eZLib/src/eZLib/Physics/Resistance.java
	new file:   eZLib/src/eZLib/Study/FluideResSketch.java
	deleted:    eZLib/src/eZLib/Study/sun_texture.jpg
	deleted:    eZLib/src/eZLib/Study/sun_texture.png