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
diff --git a/app/server-control/controllers/kvm-controller.html b/app/server-control/controllers/kvm-controller.html
index 2b30c99..8160bb4 100644
--- a/app/server-control/controllers/kvm-controller.html
+++ b/app/server-control/controllers/kvm-controller.html
@@ -1 +1,4 @@
-<kvm-console></kvm-console>
\ No newline at end of file
+<div class="kvm-page page">
+  <h1 class="page-title">IP KVM</h1>
+  <kvm-console new-window-btn="true"></kvm-console>
+</div>