fix(Config loading/saving & Application Properties): Improve config loading and saving. Fix the directories to include in server pack setting by loading the correct settings with from a corrected property. Delete you `serverpackcreator.properties`-file to

fix(Config loading/saving & Application Properties): Improve config loading and saving. Fix the directories to include in server pack setting by loading the correct settings with from a corrected property. Delete you serverpackcreator.properties-file to generate a new one.