LP#1740537 Transit dialog showing wrong branch

LP#1740537 Transit dialog showing wrong branch

Always retrieve the latest copy transit from the server when displaying
the copy transit dialog.  This resolves an issue where a just-closed
transit is used instead.

Add a filter to avoid canceled transits.

Make the transit lookup call authoritative, since the transit may have
just been created.

To test (test plan courtesy of John Amundson):

1. Sign in as Library A.
2. Check in an item owned by Library B that does not have any holds
   associated with it. This will send the item in transit to its home,
   Library B.
3. Place a hold on the item to be picked up at Library C.
4. Sign in as Library B.
5. Check in the item. The transit pop-up and printout will show that
   the item needs to be transited to Library B instead of Library C.
6. Apply the patch and repeat steps 1-5 using a different item. This
   time, the transit pop-up will show that the item needs
   to be transited to Library C.

Signed-off-by: Bill Erickson <berickxx@gmail.com>
Signed-off-by: Galen Charlton <gmc@equinoxinitiative.org>
Signed-off-by: Mike Rylander <mrylander@gmail.com>