a whole lotta work!!

- refactoring
- completely changed the tooling (adding elements)
- better re-use for more stable editing
- new elements
- ui adjustments
- LINT for stair-editing
- many more changes

mapview/3DGrid/GridRenderer.h

@@ -80,7 +80,7 @@ public:
 				}
 
 				case GridRendererColorMode::SHOW_NODE_IMPORTANCE: {
-					const float xx = n.imp - 0.6;
+					const float xx = n.navImportance - 0.6;
 					glColor3f(xx, xx, xx);
 					break;
 				}