LP#1774886 Distinguish Phys Char Wizard with an edit icon

LP#1774886 Distinguish Phys Char Wizard with an edit icon

As both authority fields and the Physical Characteristics Wizard for 007 use
the same glyphicons-link class, it's not obvious to new users of the MARC
editor that the icons result in radically different actions.

Change the 007 icon to glyphicons-edit to reflect that it opens an editor
interface.

Signed-off-by: Dan Scott <dscott@laurentian.ca>
Signed-off-by: Jane Sandberg <sandbej@linnbenton.edu>
Signed-off-by: Galen Charlton <gmc@equinoxinitiative.org>