[Emotes - 1.6.2] Added framework for custom emotes

Added framework for custom emotes, enabling/disabling of default emotes
and config header
[Emotes - 1.6.2] Fixed a bug that caused internal errors with multiple worlds

Fixed a bug that caused internal errors with multiple world. Unable to
measure distance between different worlds.
[Emotes - 1.6.2] Moved Cooldown.java
[Emotes - 1.6.2] Updated to plugin version 1.6.2