Add granular settings for requiring staff initials for notes
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

There are now three separate library settings for controlling whether staff 
are required to input their initials when creating different types of notes.
See new library settings below.

Any pre-existing library setting for requiring staff initials are preserved 
during the upgrade process. After upgrading, you may choose to change the set
behavior for any of the three new settings.

New Library Settings
+++++++++++++++++++++

 * Require staff initials for entry/edit of patron standing penalties and messages. (ui.staff.require_initials.patron_standing_penalty)
 * Require staff initials for entry/edit of patron notes. (ui.staff.require_initials.patron_info_notes)
 * Require staff initials for entry/edit of copy notes. (ui.staff.require_initials.copy_notes)