Update KVM layout and add open in new window functionality

-Adds heading with new layout consistency class name
-Adds open in new window functionality

Resolves: openbmc/phosphor

Update KVM layout and add open in new window functionality

-Adds heading with new layout consistency class name
-Adds open in new window functionality

Resolves: openbmc/phosphor-webui#81

Tested on a Witherspoon with power on and with build
that allows up to 4 kvm sessions connected
at a time https://gerrit.openbmc-project.xyz/c/openbmc/bmcweb/+/25231.

KVM console loads in firefox, chrome, safari, edge and IE11.
Opening new window and returning to parent window is
functional across all browsers.

Signed-off-by: Dixsie Wolmers <dixsiew@gmail.com>
Change-Id: I32cda025bdd459740ca2b42d573b431fac687860

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