Merge pull request #6 from Stiivi/master

Quick start settings.py: works out-of-the-box
Moved meta robots to the top of HTML head.
Reviewed settings and updated documentation accordingly.
Drafted examples of local HTML usage.
Fixed documentation typos.
Added label attributes support and some cubes model support.
Removed to-be-done comment from documentation.
Updated Flotr2 library to support stacked lines.
Improved export (now exports all pages).
Moved Chart Type menu item to the top of the menu.
Added the Undo/Redo plugin.
Added Undo limit and minor fixes to Undo plugin.
Put savedId, shared, owner out of serialized view params. Closes #9.
Version 0.3.