v1.15.7

Improved response format
GET /audit - Added detailed user info
GET /auth/tip - Added detailed user info
GET /dlog - Added detailed user info
GET /dlog/list - Added detailed user info, changed isdivision to division_validated
GET /dlog/leaderboard - Improved response format
GET /user/list - Improved response format
GET /member/list - Added roles, removed highestrole which should be calculated by frontend
GET /announcement - Added detailed author info
GET /application - Added detailed creator / staff info
GET /application/list - Added detailed creator / staff info
GET /division - Added detailed user / staff info, removed user_is_staff which should be calculated by frontend
GET /division/list/pending - Added detailed user info