Called after an user suggests a new location and before the suggested location is stored to a specified widget.
This allows to manipulate with a suggested location to perform snap-to-grid, locked-axis on any other movement strategy.
widget - the moved widget
originalLocation - the original location specified by the MoveProvider.getOriginalLocation method
suggestedLocation - the location suggested by an user (usually by a mouse cursor position)
the new (optional modified) location processed by the strategy