v1.5.7 - Rest updates, RTMP bug fixes

Domain

• Added missing game mutators to practice game config
• Added LobbyMetaData
• Updated Season

Rtmp

• Fixed typo in gameService.startChampSelect
• Fixed a bug where the handshake failed on slow connections
• Fixed an incorrect parameter to PlayerPreferenceService.loadPreferenceByKey

Rest

• Fixed an incorrect return type for the match endpoint
• Added missing fields to match
• Added maps endpoint to static data
• Added locales and localized messages endpoint to static dat<

Xmpp

• Added helper method for sending messages to summoner ids.
• Added method for joining a chat room without name hashing