* Update the GeoIp database download method [BREAKING]
Now GeoIp database updates require a ClientID and a LicenseKey, which can be obtained for free at https://www.maxmind.com/en/accounts/current/license-key
* Codestyle
- 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
- Introduce new configuration (taken from @sgdc3)
- Create JoiningPlayer, based on a Player object or String name, determining how permissions will be checked
* Introduce hasSession field in datasource
That makes isLogged more consistent as it will be '1' only when the player is online.
* Fixes
* Fix unit testing
* Update config doc
* Create SessionService
* Create test for SessionService, avoid DB operations if sessions are disabled
* Cleanup: remove outdated warning for session timeout = 0
- Remove outdated warning
- Encapsulate session enabled check in SessionService
* Fix failing SessionServiceTest, add data source integration tests for session methods
- NewAPI class will be removed in 5.5, not 5.4
- Add entry for "Deprecated" recommendation in hash algorithms page
- Mention possibility of wildcards for restricted user rules
- Remove SingleFilePersistenceHandler: DistributedFilesPersistenceHandler with segment size 1 can be used instead
- Rename SegmentFilesPersistenceHolder to DistributedFilesPersistenceHandler
- Rename SeparateFilePersistenceHandler to IndividualFilesPersistenceHandler to match LimboPersistenceType entry
- Add link to limbo page on Wiki in the settings
- Update docs to reflect new commands, configurations (account recovery, limbo handling) and messages
- Change message for the recovery code email to contain the new command
- Introduce options to define how allow flight, fly & walk speed should be restored from LimboPlayer
- Create consistency tests for line length in SectionComments methods and to ensure that all SettingsHolder classes are part of the returned ConfigurationData
- Change placement and comment of settings.restrictions.banUnsafedIP to make it clear that it only bans unknown IPs using a restricted username
- Move "MySQL use SSL" option outside of the column options
