Add trial information to the admin panel

[judrbug]

In the old admin panel we displayed the trial information in the table to quickly check usage information. Add this to the new panel ensuring the following:

1. Trial users - pull this information from the trial detail stats for an app instance. It should show the total number of trial users if added.
2. Display the trial end date column user type: If an end date is added, add a countdown to the date like we have in the old panel.
3. Add sorting on the column by end date