From 3.1.6->3.1.7
Controller - fix favicon.
Controller - fix missing notes for hotspot operators.
Controller - fix Quickpay refund.
Controller - for Authorize, make sure refund is available within 120 days.
Controller - allow backup to specify days.
Controller - fix unicode SSID support.
Controller - remove 3000 stations limitation.
Controller - use 127.0.0.1 when click on Launch button.
Controller - allow promoting of super admin in system.properties.
UAP-AC - SDK upgrade.
UAP-AC - 2G performance improvement.
UAP-AC - fix performance impact due to antennas state.
UAP-AC - fix clients fail to roam back in enterprise security wlan.
UAP-AC - fix 11g client shown with 11b icon on Controller.
UAP-AC - avoid tinysnmpd respawn repeatedly.
UAP - fix kick a station in wireless uplink will cause downlink ap dropped.
UAP - fix WEP performance.
UAP - wireless uplink migration from V2->v3.
PICOM2 - fix picoM2 max power drop.
http://community.ubnt.com/t5/UniFi-Upda ... a-p/644583
