Add hardware node coloring. Includes:

- Increase ContentFeatures serialization version
- Color property and palettes for nodes
- paramtype2 = "color", "colored facedir" or "colored wallmounted"

client/shaders/wielded_shader/opengl_vertex.glsl

@@ -1,7 +1,6 @@
 uniform mat4 mWorldViewProj;
 uniform mat4 mWorld;
 
-uniform float dayNightRatio;
 uniform vec3 eyePosition;
 uniform float animationTimer;