Refactored rmi, images, diff, and history.
Made fixes to kpod images in the way it was handing the templates as well as printing the image names
Signed-off-by: umohnani8 <umohnani@redhat.com>
kpod diff reports on differences between two layers, specified as
layer IDs, containers, or images. In the case of containers or
images, kpod diff produces a diff for the top layer
Signed-off-by: Ryan Cole <rcyoalne@gmail.com>
