Removes calls to QObject#tr()
Removes calls to QObject#tr()

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