Bug 11473 - Improve wording in log viewer template

Bug 11473 - Improve wording in log viewer template

This patch capitalizes 'member' and 'biblio' as object labels in the
log viewer.

It also adds a "Subscription" label, and changes "auth" to "Authority".

_TEST PLAN_

Before applying patch:

1) View logs for patrons, new biblio, serials, and authorities.

Apply the patch:

1) Notice the capitalization and new/modified labels.

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>