<enchant#Effects> inside skills.

DP part for:
https://bitbucket.org/l2jserver/l2j_server/commits/23f7710c14ad695ed4a98a1e83e0a1076a794e52

effect handlers).

- Splitted calcCrit formula in two parts, one for critical made by
normal hit and one for critical made by skills (calcSkillCrit).

DP part for:
https://bitbucket.org/l2jserver/l2j_server/commits/ee1caa22ef69992dc02a4c33196549b89cfce9e1

DP part for:
https://bitbucket.org/l2jserver/l2j_server/commits/6086e154c274b5df07b3961c963f718c3ea307a6

- Zaken's Call (21242)
- Freya's Call (21243)
- Frintezza's Call (21244)

Skills:
Summon Subordinate (6841)
Enhance (6842)
Enhance (6843)
Power Strike (6844)
84 level Raid Boss (6903)
84 level Raid Boss (6904)
85 level Raid Boss (6905)
85 level Raid Boss (6906)
85 level Raid Boss (6907)
Transform Master (6908)
Charming (6909)
Dance (6910)
Greeting (6911)
Stigma Aftermath (6912)
Challenge of Faith (6913)
Antharas's Cute Tricks (6916)
Kanna's Splendor (6917)
Kallesin's Splendor (6918)
Challenge Acceptance (6919)
Collector's Fortune (6920)
Penetration Attack (6921)

Dread Pool (774)
Presentation - Yellow Portal Ray (6800)
Presentation - Yellow-Green Portal Ray (6801)
Presentation - SSQ2 General Purpose 6 (6802)
Arena Haste (6803)
Arena Wind Walk (6804)
Arena Empower (6805)
Arena Acumen (6806)
Arena Concentration (6807)
Arena Might (6808)
Arena Guidance (6809)
Arena Focus (6810)
Arena Death Whisper (6811)
Arena Berserker Spirit (6812)
Focus Sonic (6813)
Focus Force (6814)
Deadly Poison (6815)
Deadly Bleed (6816)

 * Fixed Bleeding Fly AI that keeps summoning minions after the boss is
dead.
 * Fixed Shadow Summoner AI that keeps summoning minions after the boss
is dead.
 * Fixed Shadow Summoner AI that self-destructed preventing players from
getting quest items.
 * Fixed Fate's Whisper (234) HTML.
 * Flame Box height.
 * Fixed Emerald Horn's Deadly Bleed to match other damage over time
skills.
 * Fixed Emerald Horn AI stuck on most hated dead character.
 
Reported by: ShinichiYao

https://bitbucket.org/l2jserver/l2j_server/commits/caaa6fcb01b4ab8cea08475327a42d117376d3c1

- Implement few skills (related to GM transformation)

Skills:
Summon Skeleton (6835)
Silence (6836)
Range Magic Attack (6837)
Self-destruction (6838)
84 level Raid Boss (6902)

Skills:
Power Strike (6833)
Range Magic Attack (6834)

Skills:
Summon Parasite Leech (6832)
Self-destruction (6872)
npc Acumen (6915)

Skills:
* Critical Strike (6826)
* Petrify (6827)
* Dust Storm (6828)
* 84 level Raid Boss (6899)
* NPC Haste (6914)

Requested by: @ShinichiYao

Skills:
* Deadly Bleed (6816)
* P. Def. Decrease (6821)
* P. Def. Decrease (6822)
* Reflect Attack (6823)
* Piercing Storm (6824)
* Bleed (6825)

Requested by: ShinichiYao

+ Spoil
+ Spoil Festival
+ Prominence
+ Hydro Blast
+ Hurricane
+ Hex (6873)

Fix #195

+ Drop Invicible effect
+ Drop Petrification effect

+ Add BlockBuff effect
+ Add BlockDamage effect
+ Add BlockDebuff effect

+ Fix Arena Buffer skills (only few appear on player)

+ Improvement skill validator
+ Add/Remove some stats form skills to be more retail.

- Shield Strike (984)
- Deadly Strike (986)
- Rush (994)
- Rush Impact (995)
- Blazing Boost (998)
- Battle Cry (1561)
- Chant of Berserker (1562)
- Fury of Pa'agrio (1563)
- Dark Wind (6743)
- Morale Boost (6885)
- Soul Roar (20006)

- Challenge for Fate (985)
- Multiple Shot (987)
- Battle Whisper (988)
- Defense Motion (989)
- Death Shot (990)
- Throwing Dagger (991)
- Sonic Mastery (992)
- Force Mastery (993)
- Crushing Strike (997)
- Chant of Elements (1549)
- Mass Purify (1551)
- Mass Vitalize (1552)
- Aura Blast (1554)
- Aura Cannon (1555)
- Dimension Spiral (1558)
- Potential Ability (1559)
- Lucky Blow (1560)
- Piercing Attack (1564)
- Focus Sonic (6813)
- Focus Force (6814)
- Challenge of Faith (6913)
- Collector's Fortune (6920)
- Penetration Attack (6921)
- Zaken's Call (21242)
- Freya's Call (21243)
- Frintezza's Call (21244)

They is not used anymore.
Update xsd file with enum for <set name=?

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

L2J/L2J_Server@066ce70b2ebf1dea87c8c07f71021cf94afa822e

Change old base mul values 0.* to 1.*
DataPack L2J/L2J_DataPack@a5cca7d534016f32882434308790d72c16c78a82

Reported by: Maui

L2J/L2J_Server@2d6af28bc61162a76d37f74e529e922c9c76f446

This reverts commit 84734844.

L2J/L2J_Server@ac875a3457c8b4af95db2646346cfdb1442be25e

	* Added a new parameter in skill xmls '''blockedInOlympiad'''.

Reviewed by: Adry_85, St3eT

	Reviewed by: Nos, St3eT

	Reviewed by: Nos

* Reviewed by: Zoey76, Adry_85

Reported by: Janiko

	* Implemented all "level display" skill for raid bosses.
	* Added missing item consume ID for some items.
	* Implemented Soul Retain skills for Ekimus raid boss.