Don't direct link to a change found by operators

If operators were used in the change query (e.g. "is:starred") its
weird for the user if we jump to the only matching record.  Instead
we want to display a table of results, with the one record showing
so its clear there was only one match.

However we still want to direct link to a change if the user
enters a legacy id number from the URL, a newer-style Change-Id,
or a commit SHA-1 and only one change matched.

Change-Id: I6784a1d277fa1c1a991ca338f7dfae8569c1667c
Signed-off-by: Shawn O. Pearce <sop@google.com>
2 files changed