user feedback logic was updated to report if zero posts were found in a
zip and form submissions disable the submit button until the form input
for files changes again, preventing possible duplicate submissions on
large zip uploads.
updated to v0.2.1 wfimport to prevent early error returns when an
invalid file is present in a zip.
by default all content is enabled and displayed, this allows users
without javascript enabled to still use the form and understand what is
happening.
users with javascript enabled will see actions and options
disabled until the files selected allow, and show information and
warnings about zip files in needed.