added screenshots for bijiben (gnome-documents)
added screenshots for cheese
added screenshots for darktable
added screenshots for epiphany
added screenshots for firefox
added screenshots for gedit
added screenshots for gimp
added screenshots for glade
added screenshots for gnome-clocks
added screenshots for gnome-disks
added screenshots for gnome-documents
added screenshots for gnome-font viewer
added screenshots for gnome photos
added screenshots for gparted
added screenshot for inkscape