Bug 11473 - Remove boilerplate in log viewer template

Bug 11473 - Remove boilerplate in log viewer template

This patch eliminates unnecessary conditions and boilerplate.

_TEST PLAN_

Apply the patch.

1) Try viewing logs for circulation, patrons, fines,
cataloguines, serials, authorities, etc.
2) Note that everything should look exactly the same as before,
with one exception: FINES
3) Fines will now show "member X" for the user associated with
the fine.

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>