[Merge] lp:~morphis/aethercast/networking-fixes into lp:aethercast

[Simon Fels]

The proposal to merge lp:~morphis/aethercast/networking-fixes into lp:aethercast has been updated.

Commit Message changed to:

Multiple changes for Networking support:

* Add a DisconnectAll dbus method to allow the UI to easily disconnect
  any connected device. Just for the purpose of a demo.
* Return proper errors when scanning fails.
* Enable miracast mode for the WiFi driver if available.

For more details, see:
https://code.launchpad.net/~morphis/aethercast/networking-fixes/+merge/287456
-- 
Your team Ubuntu Phablet Team is requested to review the proposed merge of lp:~morphis/aethercast/networking-fixes into lp:aethercast.