webadmin: UI for cpu shares

Added UI for CPU shares.
Changed the UI for CPU Pinning topology (was moved to the 'Resource
Allocation' tab and added info icon instead of the example panel)

Change-Id: I5c975cf521f8aa18d3a6836dee31fd249a8815bb
Signed-off-by: Ofri Masad <omasad@redhat.com>