<bugfix>Added ability to open workflows from query results</bugfix> <ticket>#486</ticket>
<bugfix>Added ability to open workflows from query results</bugfix>
<ticket>#486</ticket>

Double-clicking a search result now opens the corresponding workflow,
and a user can also view differences from the search results.

gui/vistrail_view.py:
  - QVistrailView.create_query_view: connect versionSelected and
    diff_requested signals to normal handlers

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