Added form configuration for delete pages action
More form fixes
Updates to delete and append action executers

Made “destination-name” parameter optional.  If provided, the action
will use the provided name.  If not provided, then the name of the new
file will use the old filename as a template.
fixes to the "hiding checkbox" js + template
Skeleton code for PDF/A converter

Initial skeleton code for converting PDFs to PDF/A (various levels)
using an action
More share form fixes and cleanup