Users tab of admin view should list user information

[noranda]

The Users tab of the admin view should list information for each user registered including First Name, Last Name, Username, Provider, Administrator, Staff Role, and Status. The user list should be able to be filtered by the users name or username. This filter process should occur automatically as the user is typing.

Clicking on the "x" to the right of the filters box should clear out and typing and revert back to the default grayed text "name or username" as follows:

Clicking on the provider dropdown will display the following dropdown options:

Administrator, Staff Role, and Status options are toggles.