#188898: Removed unneeded check_plain prior to database save; these should be done on output, not input.

#192265: Make nodequeue queue size text themeable. I'm not completely sure about doing this but I committed it anyhow.

#178583: Fix for size 1 queues. Also, fix for cached nodequeue position causing links to mistakenly show queue presence

#171911 by kndr: Only check nodequeue size on autocomplete if there is a max size to bother checking.

A few bug fixes from quicksketch, plus totally rewritten javascript to support adding nodes to a nodequeue from the view page.