Merge changes Ic62822a4,Ie6505c8e into gb-ub-photos-arches

* changes:
  Change how stitched images are inserted into Gallery.
  Move panorama stitch progress outside the image.
tree: 46edd303a63e2ed3f6b937369866db8097d566b8
  1. gallerycommon/
  2. src/
  3. src_pd/
  4. tests/