<bugfix>open_many_from_db should not be used with pre 1.0.2 schemas</bugfix>
<bugfix>open_many_from_db should not be used with pre 1.0.2 schemas</bugfix>

db/services/io.py:
- open_vt_from_db:
  open_many_from_db should only be used if it exist in the schema version dao

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