The idPrefix scheme used by subclasses of Uize.Widget has been refactored to enforce consistency and to make it easier to ascertain by looking at a node's id value what it's function is and which widget it serves.
The new syntax follows the form...
rootWidgetIdPrefix_childWidgetLevel1IdPrefix_childWidgetLevel2IdPrefix-nodeIdSuffix
or, for a root node (ie. where the node id suffix is blank), just...
rootWidgetIdPrefix_childWidgetLevel1IdPrefix_childWidgetLevel2IdPrefix