LP#1704873 webstaff: label printing

LP#1704873 webstaff: label printing

...initial hook
...better stock template for labels, and a | wrap filter
...pull in some Library Settings for Print Labels
...Reset to Default button for templates for both receipt and item print labels
...toward tabs for Print Label interface
...template management for print labels
...bundle the Call Number Template in with saved templates
...manual editing of cn's for print labels
...And affixes in the stock CN template.
...Settings tab for print labels
...add Print Labels action to Copy Buckets
...and some other cosmetic tweaks to the Actions menu
...add Print Labels to Holdings View
...provide MVR's for use with Print Labels
...better than super simple record, but Display Fields will be better yet later on
...new org unit settings for print labels
...and fix to stock call number template for affixes
...and cn_wrap filter for call numbers
...handle null location affixes
...implement Print Item Labels on Save & Exit in vol/copy editor

Signed-off-by: Jason Etheridge <jason@EquinoxInitiative.org>
Signed-off-by: Bill Erickson <berickxx@gmail.com>