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

	* Reviewed by: Zoey76

	* Removed lot of casting.

'''Note:''' If you get errors on your custom scripts after synchronizing, just check and change methods from getXXXId() to getId().

	* Comment fixes will be done later.
	* This is done so new patches won't be so large due new Eclipse settings on save.

	* 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.

* Removing !AutoChatHandler, because it is useless now

Reviewed by: !UnAfraid

	* Avoiding synthetic access.
	* Avoiding potential NPEs.
	* Minor JavaDocs fixes.
	* Added some TODO tasks.

	* Unhardcoding most of skill ids
	* Fixed some typos
	* Added missing system messages
	* Added some TODO: comments
	* Decreasing range of shot skill broadcasts

	* Wondrous Cubic - 1 time use should be consumed upon usage.
	* Added more missing GPL notices.
	* Implemented Calculator item handler.
	* Moved some high time reuses from items skills to it's items, it's a temp fix for missing global skill reuse, since item reuse is global to all classes.
	* Removed custom check based on skill type for Extractable skills with high reuse not being able to be used in sub-classes.

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handler defined inside etcitem table
require [L3107]