[only-web.rb] handle / path by redirecting to index.html
[only-web.rb] handle / path by redirecting to index.html

This is what erlang server does and this is necessary, because due to
recent changes in reloadApp() we reload to '/'.

Change-Id: Id24a9db19e1d5794a0a980e33627c12c79e5de13
Reviewed-on: https://review.northscale.com:8443/1235
Reviewed-by: Dustin Sallings <1c08efb9b3965701be9d700d9a6f481f1ffec3ea@spy.net>
Tested-by: Dustin Sallings <1c08efb9b3965701be9d700d9a6f481f1ffec3ea@spy.net>

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