First cut of auto-failover UI.
First cut of auto-failover UI.

Change-Id: Ib941f2e6e1fcf5605a83f7ac78fd25065dcff419
Reviewed-on: http://review.couchbase.org/6989
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Reviewed-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>

nimishzynga/ns_server,nimishzynga/ns_server,pavel-blagodov/ns_server,membase/ns_server,vzasade/ns_server,t3rm1n4l/ns_server,mschoch/ns_server,ceejatec/ns_server,vzasade/ns_server,ceejatec/ns_server,t3rm1n4l/ns_server,t3rm1n4l/ns_server,daverigby/ns_server,membase/ns_server,membase/ns_server,daverigby/ns_server,mschoch/ns_server,daverigby/ns_server,mschoch/ns_server,membase/ns_server,ceejatec/ns_server,t3rm1n4l/ns_server,mschoch/ns_server,nimishzynga/ns_server,ceejatec/ns_server,nimishzynga/ns_server,daverigby/ns_server,ceejatec/ns_server,t3rm1n4l/ns_server,pavel-blagodov/ns_server,pavel-blagodov/ns_server,vzasade/ns_server,vzasade/ns_server,mschoch/ns_server,mschoch/ns_server,nimishzynga/ns_server,daverigby/ns_server,pavel-blagodov/ns_server,ceejatec/ns_server,membase/ns_server,nimishzynga/ns_server,membase/ns_server