Create 'authorize newly registered users' page (admin side)

[philipmjohnson]

Implement the 'authorized newly registered user' page.

This page should:

• List all the accounts that have been registered but not yet approved.
• Allow the admin to see all the registration details.
• Check a box and press submit to authorize the registration.
• Check a box to indicate if a text message notification should be sent.
• Upon authorization, the system should send a text message indicating the registration has been authorized to the user if the associated box is checked.