Make sure we have latest bean.js
Replace remaining bean references with ds.event
Clean up old dashboard before reload

The recurring DataTables warning was because the old dashboard object
was not being properly disposed off before reloading, so event handlers
for the previous dashboard object were still running.
Restore INFO default log level
Clean up previous dashboard before load
Clean up without_updates code
Merge pull request #311 from urbanairship/sortable-tables

Cleanup dashboard on refresh