Implemented Update Checks and changed Version to 1.2.6

Added some new Config Options, to send some data to the player withou…

…t needing a custom plugin

Updated the Version to 1.2.5

Added the ability to enable/disable Permissions in the config.yml

Changed Version to 1.2.4

Removed not needed Code from the LabyPluginMessageListener

Changed the Maven Version in the README.md and added some Info in the…

… plugin.yml

Added distributionManagment in the pom.xml