Remove page faults from cadvisor UI.
Page fault data is useful for inference and performance detection, but
it doesn't make sense on the summary UI. We have limited space on the
main container page. Let's use it for main throughput signals. Removing
faults make network stats more prominent too.

Docker-DCO-1.1-Signed-off-by: Rohit Jnagal <jnagal@google.com> (github: rjnagal)