Bug 10212: (qa followup) accordion collapsed by default

Bug 10212: (qa followup) accordion collapsed by default

By default, the accordion shows the first element (Acquisitions) which
is empty, and missleading. This patch collapses it by default.

The expected behaviour is that if we are rendering because the user saved
its changes, the modified accordion should be expanded, so I added a test
for the $panel variable.

Template comment added for future references about it.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>