<ticket>#432</ticket> and probably <ticket>#462</ticket>
<ticket>#432</ticket>
and probably
<ticket>#462</ticket>

--
gui/pipeline_view.py
In QGraphicsConfigureItem.mousePressEvent()
   Removed event.ignore() call and let the scene controls which item will be the mouse grabber.

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