GUI Rendering and various fixes

src/main/java/appeng/fluids/client/gui/widgets/GuiFluidSlot.java

@@ -45,7 +45,6 @@ public class GuiFluidSlot extends GuiCustomSlot
 		final IAEFluidStack fs = this.getFluidStack();
 		if( fs != null )
 		{
-			RenderSystem.disableLighting();
 			RenderSystem.disableBlend();
 			final Fluid fluid = fs.getFluid();
 			final FluidAttributes attributes = fluid.getAttributes();

src/main/java/appeng/fluids/client/gui/widgets/GuiFluidTank.java

@@ -52,7 +52,6 @@ public class GuiFluidTank extends Widget implements ITooltip
 		if( this.visible )
 		{
 			RenderSystem.disableBlend();
-			RenderSystem.disableLighting();
 
 			fill( this.x, this.y, this.x + this.width, this.y + this.height, AEColor.GRAY.blackVariant | 0xFF000000 );