Fix: Handle switching between Wifi & Wifi Tether in QuickSettings

PS2: Split some long lines

Change-Id: Id428c8c040d9aebfb3ee731841250bd50805b580
Signed-off-by: Gergely Szell (sethyx) <szell@hu.ibm.com>

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettings.java