When TINYIB_ADMINPASS is set, a super-administrator account with the username 'admin' is created using the provided password. WHEN TINYIB_MODPASS is set, a moderator account with the username 'mod' is created using the provided password.
Resolves #147.
Resolves #122.
Resolves #125.
Resolves #124.
Resolves #118.
Partially implements #101.