Closes #4099. The application now reaps orphaned tags automatically,  preventing them from crashing via the sidebar tree-graft assertion.
Closes #4099. The application now reaps orphaned tags automatically, 
preventing them from crashing via the sidebar tree-graft assertion.
jof/shotwell,ritchiewilson/shotwell,polymeris/shotwell,ritchiewilson/shotwell,damianmoore/shotwell,Sanva/shotwell-gsoc,jimbonator/shotwell,damianmoore/shotwell,polymeris/shotwell,abrauchli/shotwell,jof/shotwell,jof/shotwell,abrauchli/shotwell,h4ck3rm1k3/shotwell,damianmoore/shotwell,h4ck3rm1k3/shotwell,jimbonator/shotwell,polymeris/shotwell,abrauchli/shotwell,Sanva/shotwell-gsoc,jimbonator/shotwell,h4ck3rm1k3/shotwell,Sanva/shotwell-gsoc,ritchiewilson/shotwell