[refs #3] Fixing use of value_format so that empty values are rendered correctly
[refs #3] Another fix for when blank values are entered instead of None
[refs #3] AJAX-ifying the dashboards
[refs #3] Fixing link clicking to work with newly created panels which get created by the AJAXy update
[refs #3] Fixing link clicking to work with newly created panels which get created by the AJAXy update
[refs #5] Adding a hack to get around countSeries failing when there are no matching series
[refs #6] Adding caching for dashboard panel values, and a task to fill up the cache in the background
[refs #8] Adding a dashboard list page with a summary of the status of each dashboard
[refs #8] Showing seconds for "last update" value
[refs #7] Adding a menubar for easier navigation
[refs #7] Using the dashboard list as a homepage for now
[refs #7] Fixing the `get_absolute_url` method for Dashboards