Fixed when Herbs are not applied and the system message is not printed when a mob is killed by a spell while herb auto-loot is on.

Reported by: @HD321kbps, @Maneco2

Added missing copyright notice.

General cleanup.

This fixed the null pointer in condition checks with items which execute
a skill with TargetType SELF (effected was null).

Added config reload and test.

Organizing all imports.

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

Added config reload and test.

Organizing all imports.

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