Today's updates to lp:zeitgeist broke event_view

As stateted by Mikkel in bug 642772 the event_view is broken for `old` databases

Traceback:

DBusException: org.freedesktop.DBus.Python.sqlite3.OperationalError: Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/dbus/service.py", line 702, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/media/devel/zeitgeist/trunk/zeitgeist/../_zeitgeist/engine/remote.py", line 197, in FindEventIds
    num_events, result_type)
  File "/media/devel/zeitgeist/trunk/zeitgeist/../_zeitgeist/engine/main.py", line 392, in find_eventids
    return self._find_events(0, *args)
  File "/media/devel/zeitgeist/trunk/zeitgeist/../_zeitgeist/engine/main.py", line 375, in _find_events
    result = self._cursor.execute(sql, where.arguments).fetchall()
  File "/media/devel/zeitgeist/trunk/zeitgeist/../_zeitgeist/engine/sql.py", line 59, in execute
    return super(UnicodeCursor, self).execute(statement, parameters)
OperationalError: no such column: subj_uri_id