Add turn off action to WiFi Tether notification

Change-Id: I320405ed7e90e4c06ecdb127cd4c1cad6bedbcdd
Signed-off-by: Gergely Szell (sethyx) <szell@hu.ibm.com>
Merge "Add turn off action to WiFi Tether notification" into jb-mr1
Merge remote-tracking branch 'aokp/jb-mr1' into jb-mr1