Add CHANGELOG entry for #39
Allow collpasing items in the sitemap
Fix animation when expanding items with sub-items
Merge pull request #40 from withassociates/collapsible-sitemap

Expandible sitemap
WIP attachment composer grid mode
WIP Admin UI
Make attachment composer grid-aware
Improve attachment grid behaviour
Fix asset thumb in asset editor
Use tag_list on Assets
More transparent overlay on Assets
Control width of asset loading slide
Skinnier loading image on assets
Skinnier loading image on assets
Place loading image correctly on x-axis
Resize upload loading images
Center text on asset loading