Added missing copyright notice.

General cleanup.

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

- Replaced SkillData.getInstance().getSkill with SkillHolder DTO;
- Replaced Skill versions of doCast and doSimultaneousCast with
SkillHolder ones;
- Fixed typo on Sanctum of the Lords of Dawn instance zone;
- Some cleanup.

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

- Replaced SkillData.getInstance().getSkill with SkillHolder DTO;
- Replaced Skill versions of doCast and doSimultaneousCast with
SkillHolder ones;
- Fixed typo on Sanctum of the Lords of Dawn instance zone;
- Some cleanup.

Fixed minor typos.

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

Reducing object creation by using static methods.
Reducing database usage.
Cleanup.
Fixed Crystal Caverns instance check.

- Update Village Master jython script to create a QuestState in onTalk following L2J/L2J_Server@ac426d90c3f02bb4f1916f1d23314c365c306907
- Updating all use L2PcInstance#getQuestState to use the helper from Quest when possible

Reviewed by: Zoey76, !UnAfraid

	* Patch by: jurchiks
	* Reviewed by: xban1x

Patch by: Gladicek
Thanks to: LasTravel, malyelfik
Reviewed by: Zoey76