Angular MARC Flat Text Editor MarcEdit Breaker Support

[Bill Erickson]

Evergreen 3.3.

Spun off of bug #1834665.

Quoting from the bug:

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2) A long-standing issue for catalogers that use MarcEdit a lot: MarcEdit uses 2 spaces between the MARC tag and delimiters, e.g.:

=245 10$aPacific seaweeds :$ba guide to common seaweeds of the West Coast /$cLouis D. Druehl and Bridgette E. Clarkston.

The Evergreen flat text editor only uses one, e.g.:

=245 10$aPacific seaweeds

It would be nice if we could copy/paste between the two more easily!
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Proposal is to create a setting which specifies whether to use the existing stock Evergreen breaker format (which matches Perl's MARC::Record) or the MarcEdit style breaker format.