Add dev-messages panel
deferEmptyText: false
move icon to first pos
drop variables, pita...
refine style of feature-detail slightly (more padding, slightly lighter)
add another tool for visual ref
comments
reduce size of style for each icon slightly using background shortcut.
Set vertical-align: middle, so that icons with height/width in trees render properly
Add potential preloading stuff, but have to sort out web-resources caching first.