update web-common submodule - taler-www

commit ff7b76b4401cf0a34c73aeef940d32629ebc6954
parent 08c4e003ce535914671daf0c2e2514bcc30771e5
Author: tg(x) <*@tg-x.net>
Date:   Thu, 27 Oct 2016 12:32:42 +0200

update web-common submodule

	taler-www Main taler.net website
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