Sending cache-control header
Compare tile load performance between new.slide-atlas (iipserver) and slide-atlas
Working cache for tile, except the resolution occurs after image store has been loaded
Merge branch 'dev/dj-cache-header-for-tiles'

* dev/dj-cache-header-for-tiles:
  Working cache for tile, except the resolution occurs after image store has been loaded
  Compare tile load performance between new.slide-atlas (iipserver) and slide-atlas
  Sending cache-control header