Actually return 404 when requested asset doesn't exist [SCI-1994]
Actually return 404 when requested asset doesn't exist [SCI-1994]

mlorb/scinote-web,Ducz0r/scinote-web,mlorb/scinote-web,Ducz0r/scinote-web,mlorb/scinote-web,Ducz0r/scinote-web