Fixes/cleanup

1. Fix up jsdoc in AI prompts; use @override to complete @abstract for prompt parts, but don't redefine return values. Prompt parts are allowed to return undefined, even implicitly.
2. Fix tattoo prompt putting tattoo in the negative prompt when a slave is tattooed instead of when she isn't. Fixes #5082 (closed)
3. Refactor weather output to reduce duplication.