Added missing copyright notice.

General cleanup.

Reported by: hd321kbps

Organizing all imports.

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

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.

Quest To Lead and Be Led (118).
Quest The Leader and the Follower (123).

If other quests require such functionality it might be unhardcoded.

L2J/L2J_Server@e3c76974ac8a5463efe780ca458791cc3676d77f

Reported by: @St3eT
Patch by: @St3eT

Reviewed by: @NosBit, @UnAfraid, LoneRanger

  * Html fixed by CostyKiller
  * NPE checker and better logger for QuestLiny by UnAfraid
  * Fixed bad name for Stage1 super call
  * Little clean from [10436]

Reviewed by: Zoey76, !UnAfraid

	* Removed lot of casting.

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

	* 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.

	* Replaced assignment of questItemIds with registerQuestItems in all Java quests.
	* Replaced L2Skill with SkillHolder.
	* Updated Instances to use new InstaceWorld class.
	* Renamed some lower/mixed case static final variables with upper case names.
	* Updated some quests with new methods for conditions, etc.
	* Replacing playSound(String) with playSound(QuestSound)
	* Fixed some minor typos.

'''Note:''' Quest contributors please review this changeset and adjust your contributions to match this changes.

Patch by: malyelfik

	* Other warnings will be fixed later.

Also Added new command script_unload //id / script name

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