<bugfix>Made reset query work immediately for the version search box</bugfix>
<bugfix>Made reset query work immediately for the version search box</bugfix>

Added an update call to ensure that the version tree is redrawn when
query enabled is set to False.

gui/graphics_view.py:
  - QGraphicsView.setQueryEnabled: call scene().update() on disable



celiafish/VisTrails,minesense/VisTrails,minesense/VisTrails,celiafish/VisTrails,hjanime/VisTrails,VisTrails/VisTrails,hjanime/VisTrails,VisTrails/VisTrails,Nikea/VisTrails,Nikea/VisTrails,celiafish/VisTrails,hjanime/VisTrails,VisTrails/VisTrails,VisTrails/VisTrails,hjanime/VisTrails,minesense/VisTrails,celiafish/VisTrails,minesense/VisTrails,Nikea/VisTrails,VisTrails/VisTrails,minesense/VisTrails,hjanime/VisTrails,Nikea/VisTrails