Update 13 files

docs.it4i/cs/guides/horizon.md

docs.it4i/img/blender.png

docs.it4i/img/blender1.png

docs.it4i/img/blender2.png

docs.it4i/img/gpu.png

docs.it4i/img/mount.png

docs.it4i/img/paraview.png

docs.it4i/img/paraview1.png

docs.it4i/img/paraview2.png

docs.it4i/img/sshfs.png

docs.it4i/img/sshfs1.png

docs.it4i/img/sshfs2.png

docs.it4i/img/vmware.png