Prevent paragraphs from being rendered within list items
Various EAD fixes courtesy of Tim and the APE preparation tool.
Make related material multi-valued, and add sources field
Lots of enhancements to the linking functionality.
 - allow editing existing links
 - add an option to link historical agents
 - add link type to link form
 - add dates to link and form
Clean up rendering of related links in access points
Merge branch 'master' into merge_guides
Merge branch 'master' into merge_guides