Changes for mobile device support.
Added a Cron Task to clean expired AuthTokens from the datastore, and fixed minor issue with the display of the Add New Assignment button in the header when in normal display mode.
Added sorting to the assignment lists, started to implement the all classes display, and changed the UI design styles for the duegroup collapsible panels.
Almost finished with the all classes module.
Merge pull request #5 from bstockus/development

Merge Development to Production