Added database cleanup file.

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

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

	* Now this values for reward are stored in clan data instead of castle or fort data.
	* All default attributes in SQL files to DEFAULT.

Patch by: VlLight, Zoey76
Reviewed by: MELERIX

BETA/STABLE: Organizing Some Files & Cleanup (data folders excluded for now due the amount of files to move).

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Little rework for the SQL files storage structure. Hopefully clarify files purpose and ease tools maintenance. Thanks UnAfraid and MELERIX. Oh, and it's good to be back just in time(?) =)

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