squashed commit for wifi settings feature

AOSP has a basic LRU priority for Wi-Fi networks (last connected has more priority).
This changes added the ability of graphically set the priority of any of the configured
Wi-Fi networks through Settings -> Wi-Fi -> Advanced Settings -> Wi-Fi priority.

Port from cm-10.2:
* Added ic_grabber icons

Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

taken from
https://github.com/CyanogenMod/android_packages_apps_Settings/commit/a76e8c9f15058ac2b6c92e5b6f07f287a7cd9724#diff-10
thanks @jruesga

Show devices connected to the WiFi hotspot

taken from
http://review.cyanogenmod.org/#/c/66257/

Cleanup wifi settings after merger this changes

Change-Id: Idf88008dfc99c91225377ae6e425a5af3745769f
Merge "squashed commit for wifi settings feature" into android-4.4