Create admin dashboard with basic features

[taoeffect]

Problem

We don't have an admin dashboard for Chelonia, and we need one so that we can monitor basic stats and restrict how many signups and groups there are.

Solution

Design an admin dashboard.

• When it's first run on a fresh install, need to sign up an admin user with a password. Username might simply be admin, and only the password needs to be decided by the user. Create 2 password fields to confirm password.
• Ability to login / logout as the admin user.
• Display basic stats
  • How many users have signed up, including paged and searchable list of usernames
  • How many contracts are stored (with future ability to show contracts by type, click on a contract and see more details about it, including how many other contracts are part of that contract)
  • Total amount of space used