Shader Nodes:

* Use unified node sizes, as already was done with compositor nodes. Only Mapping node uses a custom size. This way we don't have too small nodes on creation anymore.
* Don't show Script Category for Blender Internal nodes.

source/blender/blenkernel/intern/node.c

@@ -3204,8 +3204,11 @@ void node_type_size_preset(struct bNodeType *ntype, eNodeSizePreset size)
 		case NODE_SIZE_SMALL:
 			node_type_size(ntype, 100, 80, 320);
 			break;
+		case NODE_SIZE_MIDDLE:
+			node_type_size(ntype, 150, 120, 320);
+			break;
 		case NODE_SIZE_LARGE:
-			node_type_size(ntype, 140, 120, 500);
+			node_type_size(ntype, 240, 140, 320);
 			break;
 	}
 }