LP1834665 Angular catalog MARC flat text editor

LP1834665 Angular catalog MARC flat text editor

Adds a set of components for editing MARC records.  The main component
acts as a container with various actions (source selector, delete,
undelete, and save options).  The body of this component is a tabbed
interface, one tab for the Enriched editor and one for the Flat Text
editor.

The Enriched editor tab directs the user to the AngJS version of the page.
the Flat Text editor tab implements the standard MARC flat text editor
interface.

Signed-off-by: Bill Erickson <berickxx@gmail.com>
Signed-off-by: Jane Sandberg <sandbej@linnbenton.edu>