BungeePing - Check your/other players ping 2.0

You need to delete old config in order to update it.

Changelog:

• Complete rewrite of the code (see GitHub)
• Fix a bug that shows the same ping of the player
• Added the possibility to check the ping of another player via /ping playername
• New permission system (see "overview" page)
• New fully-configurable config file
• Added /pingreload command with proper permission.
• Added plugin metrics.

Changelog:

• Created a GitHub repository
• Removed unused string in the config file

Really small enhancement:

• Removed unused variables.