Closes #4189.
Closes #4189.
Sanva/shotwell-gsoc,abrauchli/shotwell,ritchiewilson/shotwell,ritchiewilson/shotwell,jimbonator/shotwell,jimbonator/shotwell,Sanva/shotwell-gsoc,damianmoore/shotwell,Sanva/shotwell-gsoc,damianmoore/shotwell,ritchiewilson/shotwell,jof/shotwell,polymeris/shotwell,h4ck3rm1k3/shotwell,abrauchli/shotwell,jof/shotwell,polymeris/shotwell,damianmoore/shotwell,abrauchli/shotwell,jimbonator/shotwell,h4ck3rm1k3/shotwell,jof/shotwell,h4ck3rm1k3/shotwell,polymeris/shotwell