[Frontend] Mods to layout element editing handles

WTD-951
In-progress checkin

platform/commonUI/general/res/sass/_main.scss

@@ -45,6 +45,7 @@
 @import "controls/controls";
 @import "controls/lists";
 @import "controls/menus";
+@import "edit/editor";
 @import "features/imagery";
 @import "features/time-display";
 @import "controls/time-controller";