Webkit1 compatibility: send 404 error if the file don't exists
Webkit1 compatibility: send 404 error if the file don't exists

Signed-off-by: Gonzalo Odiard <aef65ed16d0ea9f2366d05ae21f0b27430ef2e79@sugarlabs.org>

Daksh/sugar-toolkit-gtk3,godiard/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,godiard/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,tchx84/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,puneetgkaur/backup_sugar_sugartoolkit,tchx84/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,tchx84/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,i5o/sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,godiard/sugar-toolkit-gtk3,manuq/sugar-toolkit-gtk3,sugarlabs/sugar-toolkit-gtk3,quozl/sugar-toolkit-gtk3,Daksh/sugar-toolkit-gtk3,puneetgkaur/sugar-toolkit-gtk3,tchx84/debian-pkg-sugar-toolkit-gtk3