convert floating RID_TOOLBOXWINDOW to .ui

well the dialog itself and the top toolbar, the
other toolbars remain as resources as now

Change-Id: If2bc5b2c108af0efb88fb018896806531cdafe60
Window::GetType returns WindowType not ResourceType

yikes!

Change-Id: I5aba88fbc1e452c85fb4a75260bc3518bdf5facc
FloatingWindows are no longer loaded from resource files

Change-Id: I2705bbb4db52779e0065400f09604384fd9cf151