added two missing icon files to makefile
added two missing icon files to makefile

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