-Lightmap and lightmap capture support for GLES2

-Added hint to not show some properties when running on low end gfx

editor/editor_inspector.cpp

@@ -1449,6 +1449,9 @@ void EditorInspector::update_tree() {
 		} else if (!(p.usage & PROPERTY_USAGE_EDITOR))
 			continue;
 
+		if (p.usage & PROPERTY_USAGE_HIGH_END_GFX && VS::get_singleton()->is_low_end())
+			continue; //do not show this property in low end gfx
+
 		if (p.name == "script" && (hide_script || bool(object->call("_hide_script_from_inspector")))) {
 			continue;
 		}