add dataTool link to tavern.jade

adds dataTool link, step 2 for https://github.com/HabitRPG/habitrpg/issues/3649
Merge pull request #3653 from wc0/patch-1

add dataTool link to tavern.jade
perf(achievements): bindonce on achievements
refactor(bosses): DRY bosses so we can share code between tavern boss &
party boss
feat(dilatory): model updates for tavern bosses
feat(bosses): add limit-break for bosses
feat(dilatory): load tavern boss on each cron, removing caching for now (was too buggy)
feat(dilatory): scene damage + def/str WIP
fix(dilatory): many tavern boss bug fixes & test