Add MetabaseSettings.docsUrl(), use it for consistent docs links

Merge 0.32.5 -> master

Fix misplaced queryOptions

Set X-Accel-Buffering header in streaming resp so nginx doesn't buffer 

Set X-Accel-Buffering header in streaming resp so nginx doesn't buffer

Set X-Accel-Buffering header in streaming resp so nginx doesn't buffer 

Set X-Accel-Buffering header in streaming resp so nginx doesn't buffer 

Set X-Accel-Buffering header in streaming resp so nginx doesn't buffer

Set X-Accel-Buffering header in streaming resp so nginx doesn't buffer 

Merge release 0.32.0

[Some] Async QP middleware

[ci druid]

[ci druid]

Fix load-from-h2 behavior for DashboardCards 

Fix GeoJSON not being downloadable in embeds

Async QP middleware pattern

QP Middleware cleanup

Fix missing args in do-after-receiving-permit

Process userland query middleware

[ci bigquery]

Fix spelling in load_from_h2.clj