Moved to Maven instead of Gradle.
Using proper project structure and package structure.

Fixed minor typos.

Moving all files to main folder.
Using Gradle to define, manage dependecies and build the project.
Upgraded Gradle wrapper.

Reviewed by: Zoey76, !UnAfraid

	* Proper GPLv3 license.
	* Updated all Java DP files.
	* Added missing license to the following files:
		* !FirstClassTransferTalk
		* !AdminInstanceZone
	* Updated Eclipse preferences for new files (header).
		* ''Same'' settings as Core.

- Merged HP/CP Recovery in ArenaBuffs handler
- Arena buffs fix by MELERIX
- Proper bypass handlers exception logging

	* Added missing license to Java files.
	* Cleanup.
	* Set GPLv3 as default header for Java files.

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