added a new table for login_attempts (in both SQL files)
added 2 config vars `login_attempts`(db) & `remove_successful_attempts`
changed function `reset_login_attempts()` (removed user_id and changed where to ip_address and timestamp from user_id only)
changed function `update_login_attempts()` (removed user_id and changed where to ip_address and timestamp from email/user_id only)
changed function `login()` (removed arguments from changed functions, added abilty to enable/disable removing login attempt after successful login)