add debian folder
DWindow add shadowWidth property
flush after setting the deepin_window_shadow
DPreferenceWindow add shadowWidth property default value
bugfix: DEEPIN_WINDOW_SHADOW hint's not there after the first appearence
fix deepin uninstall dialog size and shadow

Change-Id: I72b39af703b65f45fe0bd54d1b43076269f7e195
fix uninstall dialog content wrap width for short desktop name

Change-Id: Ib83a0f20ffcda09b01c67845d42efa4d2f8d5070