Fixes #2904: Infographics support.
Fixes #2908: projects.
Project list on project page.
Merge branch 'infographics'
Add some white border.
Need lxml>3.0 for handling Unicode in PySolr nicely.
Don't build student PDF for project.
Merge branch 'master' into forum
Links to infographics info page
First take on connecting lessons to forum topics
Forum: styling topic view
Tweaking last post in a topic/forum column

- time since instead of datetime
- showing last active user
Forum: related lesson fixes

- lesson should not be required
- handle missing lesson better
Forum: Grouping lessons by their section on the forum post form
Additional link
Forum: Defining font in textarea and inputs

Without it font would depend on the client styling too much.
Forum: Making subject input field wider
Forum: Missing translation
Forum search
Link to a forum