Gamma correction fixes

src/renderers/shaders/ShaderChunk/color_vertex.glsl

@@ -1,5 +1,5 @@
 #ifdef USE_COLOR
 
-	vColor.xyz = inputToLinear( color.xyz );
+	vColor.xyz = color.xyz;
 
 #endif

src/renderers/shaders/ShaderChunk/shadowmap_fragment.glsl

@@ -209,9 +209,6 @@
 
 	}
 
-	// NOTE: I am unsure if this is correct in linear space.  -bhouston, Dec 29, 2014
-	shadowColor = inputToLinear( shadowColor );
-
 	outgoingLight = outgoingLight * shadowColor;
 
 #endif