Show bullet points in lesson plan descriptions.
Generalise CSS class that enables bullet points.

This name makes it more suitable to be reused elsewhere.
Move Collapse/Expand link to Milestone title.
Use only a single "Back to Top" link at the bottom.

Inspired by www.cs.tut.fi/~jkorpela/www/totop.html.
Add additional classes to lesson plan entries.
Fade virtual entries' descriptions until mouse hovers on them.
Use abbreviated month names.
Change hover trigger to be on the entire entry.
Use .label-important on "Unpublished" labels.
Move the folder controls to the top of the folder listing to indicate that the controls only operate on the current folder.
Only generate new item information when getting the directory listing as HTML.
Almost working implementation of generating a zip out of a folder.
Got actual file download to work.
Implement reconstructing the folder structure in the temp folder.
Fix invalid character in generated file name.
Implement downloading virtual folders.
Instead of not displaying any controls at all for a virtual folder, display them and grey them out, telling the user why they can't do what they want to do.
Implement downloading zips of folders.
When a user wants to download a zip of a subfolder, don't trace all the way to root.
Allow toggling of milestone collapse/expand by clicking description.