#1361 Consolidate NewPub/EditPub help links

[Ahasuerus]

On "New Publication" and "Publication Editor" pages, change the links to Wiki-based Help pages as follows:

Publication Editor:

Help on editing publication records:

    Help:Screen:EditPub
    List of supported templates and HTML tags in notes

and the following for new pubs:

Help on adding new publication records:

    Help:Screen:NewPub
    List of supported templates and HTML tags in notes

[Ahasuerus]

Implemented in:

edit/isfdblib_print.py
edit/newpub.py

Installed in SVN 550 on 2020-08-12. Closing the FR.