Serial Control: Use Dijit-based issuance editor

Serial Control: Use Dijit-based issuance editor

The serial control interfaces use editors derived from the XUL
copy editor, while the alternate control uses Dijit editors.  This
commit takes a small step toward unification by using the Dijit
issuance editor within the serial control interface, with the
following benefits:

1) Both controls will have a very similar editor look and feel
2) Takes advantage of custom holding code wizard widget
3) Future fixes and enhancements to the editors will apply easily
to both controls
4) Begin deprecating XUL serial editors

This commit doesn't yet rip out the old issuance editor code, as
that should wait until the transition is more complete.

Signed-off-by: Dan Wells <dbw2@calvin.edu>