Feedback moderation UI (inactive, for design review)

This is a proposed UI for moderating feedback (comments, bug reports, etc) in the OpenTree site. It's intended for use in a desktop browser, vs. a tablet or smaller screen, and tries for a balance of information density and nimbleness. It supports some batch operations (eg, select 10 items, hide all) or more delicate changes to one item at a time.

REMINDER: The data shown is real, but most filters and other controls on this page are inactive. But please try the toggle for showing/hiding the details of an individual feedback item.

For now, this page is not limited to admin users. To see it, visible ```{your.domain.org}/opentree/plugin_localcomments/moderation```