Performance test

[phavekes]

This issue is imported from pivotal

If eduID get's 1M+ users, some queries might need optimizing.

• Fill the (test/acc) databse with 500K users (using studielink API)
• Preform automated tests
  • Logging in
  • Update email
  • Link account
  • Delete account link
• Repeat tests with 1M users
• Investigate any slow(er) page loads