EditingHostPage now clears its ViewCollection in switching_from, so non-active LibraryPhotoPages do reference a photo.
EditingHostPage now clears its ViewCollection in switching_from, so non-active LibraryPhotoPages do reference a photo.

abrauchli/shotwell,Sanva/shotwell-gsoc,h4ck3rm1k3/shotwell,jimbonator/shotwell,damianmoore/shotwell,jof/shotwell,Sanva/shotwell-gsoc,polymeris/shotwell,jof/shotwell,damianmoore/shotwell,jimbonator/shotwell,damianmoore/shotwell,polymeris/shotwell,ritchiewilson/shotwell,h4ck3rm1k3/shotwell,jimbonator/shotwell,abrauchli/shotwell,ritchiewilson/shotwell,h4ck3rm1k3/shotwell,Sanva/shotwell-gsoc,abrauchli/shotwell,ritchiewilson/shotwell,jof/shotwell,polymeris/shotwell