Added script to create a test user acct.
Updated database script.
Renamed unit tests script.
Updated pa11y script.

Closes #32.

Workflow for running complete test suite:

- scripts/database
- scripts/test

Creates the database, inserts a test user, runs PHPUnit, and runs pa11y.
Added colophon and sponsors page.

Closes #46 and closes #51.

Currently both pages are just stubs, and still need to be filled with content.
Hide/show passwords on demand.

Closes #43.

Passwords can now be shown then hidden on demand. Passwords are still hidden
by default.
Updated a11y test script.
Refactored ScheduleHelper.
Passing a11y tests.
Updated test script.