Created attachment 70234 [details] [review]
included in the footer following the same pattern as other
templates which have been modified to fix Bug 17858.
To test you do not need a NORMARC system.
Apply the patch and for each plugin, configure a MARC subfield (e.g.
100$a) to use that plugin.
From the MARC edit page, trigger the plugin and confirm that changes
made in the popup window are saved to the corresponding field in the
NORMARC is going away this year, no need to spend time on this. See Bug 18984.