Move post logic into its own method
Enforce permissions on add tag requests
`readonly` is invalid for checkboxes

Instead, just add them as hidden inputs.  They could also be listed separably.
Feeds were being falsely marked as readonly
Add a test for `getFeedSelectionData()`
Element legend not allowed as child of element div in this context
Duplicate ID __unlmy_posttarget

It wasn't being referenced anywhere
The for attribute of the label element must refer to a form control

Remove label and replace with a fieldset/legend.  Accessibility could be improved here, but this part of the form is only shown/used on one feed, and I don't think it is even used that much anymore if at all.
Remove duplicate `<li>`

No li element in scope but a li end tag seen.
Fix the location of the validation text

Provide a validation container
Merge pull request #205 from mfairchild365/fixes

4.0 work