Reported by: @ShinichiYao
Fixes #312

Fixed a bug where in duel player couldn't use debuffs such as Surrender
to Fire against enemy, with or without ctrl key pressed.
Fixed a bug that didn't allow to use debuff in Olympiad when opposing
side was Clan or Alliance mate.

Skills using this target handler cannot be used in party members,
regardless of being in PvP area.

Skills using this target handler can be used in Clan mates while inside
PvP area.

Guessed that unless in PvP area skills using this target handler cannot
be used in Alliance or Command Channel members.

---

Unit tests:
Each target case is properly documented using a single unit test.
Added 100% coverage unit tests for this target handler.
Replaced Mockito with EasyMock.

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

Added Enemy and EnemyOnly target type handlers.
Added support for affect scipe "SINGLE".

Fixes #149
Fixes #107

The following skills can only be used in enemies:
Confusion (2)
Lure (51)
Veil (106)

Fixed Shadow Step (821), now cannot be casted without force on unflagged
characters and flags the caster if used on unflagged characters.
On flagged characters do not need force (CTRL).

Reported by: @FinalDestination

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

	* Complete rework of !CharEffectList.
		* Mimicking "List" operations, remove(..), add(..), isEmpty()...
		* Thread-safe.
			* Using reentrant locks for read/write operations.
		* Removed cache-array, wasn't working.
		* Removed useless methods.
		* Removed queue, wrong implementation was leading to wrong updates in effect lists.
		* Now effects from skills are managed in batches, less calls to methods, avoiding overhead from synchronization and keeping abnormal type groups safe.
		* Support for blocked buff slots, no more hacks!
			* Implemented proper effect.
		* No more dependence on Javolution.
		* !JavaDocs!
	* Abnormal type, level and time are global to the skill and not specific to each effect.
		* Keeping support to customize each effect duration time, needs testing.
	* Added abnormal type enum, no more strings.
		* Removed overhead from string comparison.
	* !EffectTemplate rework:
		* No more public fields, we use mutators and accessors to work with them!
		* Func list to List instead of array.
			* Avoid CPU overhead, System.arraycopy(..).
		* Removed unused transform parameters.
		* !JavaDocs!
	* L2Skill rework:
		* No more dependence on Javolution.
		* Func and Effect lists to List instead of array.
		* Removed some useless effect type related method from skills.
		* Removed custom restriction for stolen effect with current duration less than 5 seconds.
		* If NPE appear they have to be properly fixed, no more hacks!
		* Updated toString() method.
		* !JavaDocs!
	* L2Effect rework:
		* Effects do not store static data from template!
		* Removed unused transform parameters.
		* Removed "passive effect" related methods, effect is passive if skill is passive.
		* Removed "buff"/"debuff" related method from effects, skills are buffs or debuffs not effects.
		* Updated toString() method.
		* Removed effectCanBeStolen() method, now canBeStolen() is overridden in effect implementations in Datapack.
		* !JavaDocs!
	* L2Item minor rework:
		* Func and Effect lists to List instead of array.
			* Avoid CPU overhead, System.arraycopy(..).
		* No more dependence on Javolution.
		* Now _questEvents is initialized only if it's used, not for all items!
	* L2Weapon fixes:
		* Fixed bug in getSkillEffects(L2Character, L2Character, L2Skill) returning always empty array of effects!
		* Func and Effect lists to List instead of array.
			* Avoid CPU overhead, System.arraycopy(..).
		* No more dependence on Javolution.
	* Reworked "get func" methods to avoid toArray(..) calls.
	* Proper use of maps, no more iteration over keys and retrieving the value using get method.
	* Externalized formula to calculate current effect duration to Formulas class.
	* Static fields are upper case.
	* Adding button to reload effects, '''must be follow by skill reload and probably player restart''' to ensure there is no memory-leftovers.
	* Fixing skill Frintezza's Songs(5008) abnormal types.
	* Fixing minor bug with High Five GM skills.
	* Added name to effect list from admin panel, fixed other minor glitches.
	* Removed old and classing GM menu.
	* Updated logs and comments.

Reviewed by: Adry_85, MELERIX

Testing video: http://youtu.be/7qadv7QQhy4

'''NOTE: Require CORE [L5903]'''

	* 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.

	* Avoiding some '''instanceof''' where it's possible.
	* Format and cleanup.

BETA: Removing backward compatibility for L2Party/L2CommandChannel if you want it skip that changeset thanks Battlecruiser

	* Using same Code warning/error configuration than core.
	* Fixed respective warnings and errors.
	* Fixing Extractable Skills restriction properly.
		1. Unhardcode Skills Ids.
		1. Now only Item Skills are restricted.
		1. Items with consume count won't be consumed without giving the reward.
		1. Applied to reuse time greater than 5 seconds, there is no point on restrict item skills with less reuse time.
		1. Unhardcoded system message for item reward.
	* Hellbound fixes:
		1. Hellbound should start closed at server start (level 0), thanks Trev.
		1. Quarry ClassCastException fix.
	* Q290_ThreatRemoval removed unnecessary int cast.
	* Q636_TruthBeyond proper method to get an int.
	* Skill Santa Claus' Gift - Luck(22018) typo fix.

	* Renamed some method to match it's function.
	* Better Format setting for enums.
'''Note:''' Require [4975].

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