Properly handle double click on external group in GroupTable

Previously double click action on row with external group result in
"Undefined group exception" because Gerrit trys to load internal group
screen for this group. Now we will discover external groups and use
external group URL (if provided) to forward user to external system same
as we do on single click.

Change-Id: I3636d6af306d5eebf48dc76ca66662271d378f10
Signed-off-by: Dariusz Luksza <dariusz@luksza.org>
1 file changed