BuildingEd's object tool ALT-picker selects the object's tile in CategoryDock.
Fixed broken drag-and-drop in BuildingTilesDialog using newer version of Qt.
Added Visibility slider to BuildingLayersDock.
Tweak the "Grime" checkbox in BuildingTilesDialog.

Rename it to make its purpose clearer, give it a tooltip, and disable it when
the selected furniture tile is not in the Walls layer.
Fixed crash with WorldLotTool and Lots that are in adjacent maps.
Use Tiled's ResizeDialog when resizing buildings in BuildingEd.

This allows offsetting the building when resizing it.
The [ and ] keys change the Eraser tool brush size.