[DEVELOPMENT ENVIRONMENT]
* NEW: Form editor: The frame drawn when a control is hovered is now darker, and drawn inside the control if possible.
* NEW: Form editor: The frame drawn when a control is hovered is now dotted if the control is a multi-container.
* NEW: Form editor: The "embed into a container" and "remove container only" functions now have their toolbar buttons.
* NEW: Image editor: The grid properties can be locked, so that they persist if the active image editor changes.
3b83a4b642