* #1523 Create admin commands to handle players' 2FA data
- Create admin command to view if a player has enabled 2FA
- Create admin command to disable 2FA for a specified player
- Revert back to SHA1 as HMAC hash function so that it works with Google authenticator
- Add message to user to tell him to run /2fa confirm to add a TOTP code
- Split TotpService further into GenerateTotpService and TotpAuthenticator, which wraps the GoogleAuthenticator impl
- Add missing tests for the services
- Change GenerateTotpService's interface to behave like a collection for more intuitive method behavior
- Old SQLite setups have the last IP column as NOT NULL but without a default value. With the new concept (where we don't set a last IP on player registration) it fails.
- Create an /authme debug child that allows to migrate SQLite (tricky because SQLite does not support dropping or modifying columns)
- Allow last IP column to be NOT NULL in MySQL as well (extend MySQL /authme debug child)
- Add TODO comments with follow-up issue to extend our commands with new registration IP field
- Create command under /authme debug that allows to change the 'nullable' status of MySQL columns (currently last date and email only)
- We need to offer a default value for forum integrations that have a NOT NULL email column. Offering a command avoids us from force-migrating existing databases while still offering migrations in both directions
- Change in default value handling: lack of values are not handled by setting default values to the PlayerAuth anymore, and reading a default value from the database into a PlayerAuth will be translated into null by the PlayerAuth builder
- When a new database is created, email and lastlogin are now nullable and lack a default a value
Open points:
- Finish MySqlDefaultChangerTest
- Revise purging logic (#792)
- Allow to have more columns nullable (#814)
