Upgrade OpenWrt and LuCI

Anyfi.net software can be integrated without kernel patches on Linux 3.12+ or with compat-wireless 2013-11-05+. We've therefore upgraded OpenWrt to a more recent snapshot on the attitude adjustment branch [1] which comes with compat-wireless 2014-01-23.1. Please merge.

1. svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@40431