More intuitive controlls

editor/js/tools/selecttool.js

@@ -11,6 +11,10 @@ class SelectTool extends Tool {
         state.setSelectedItem(link);
     }
 
+    onBackgroundClick(event, positions) {
+        state.setSelectedItem(undefined);
+    }
+
     onKeyDown(key) {
         if (key.keyCode === 17) {
             state.setTool(TOOLS.collect);