Merge pull request #95 from marotoweb/master

Checks the maximum allowed records with the same email when you add or change the email
Update 3.3.3

//Changes 3.3.3://
* Fix NPE on PlayerJoin
* Fix Group problem on unregister
* Fix Group problem on session
* Fix Caching database
* Fix a bug with authme said to login until the player isn't register
* Implement maxRegPerEmail properly
* AuthMe will not enable maxRegPerIp with local ip, like a BungeeCord ip
per example
* Refresh MySQL connection on /authme reload
* Implement first spawn separatly of Spawn
* Implement command : /authme setfirstspawn (perm:
authme.admin.setfirstspawn)
* Implement command : /authme firstspawn (perm: authme.admin.firstspawn)
* AuthMe will place automatically new/unregistered player on first spawn
* AuthMe will teleport automatically registered/logged in player on
spawn