core: Fix typos in AOSP EN resources

Change-Id: I40220888c2fbe87629d17fc52046e554388de3ee
Only discard the roaming icon if we're not roaming anymore.

  Ignore data roaming toggle because it shouldn't have impact on whether
  we show the indicator or not.

Change-Id: I445c1005a935eaca9d0a132d5a5a7fd214b300d0
ProximitySensor: check for correct MaxRange value

Use TYPICAL_PROXIMITY_THRESHOLD for devices that returns incorrect mProximitySensor.getMaximumRange() value;

Presto's proximity sensor returns values: 0.0f(near) or 5.0f(far).
mProximitySensor.getMaximumRange() must return proximity sensor's availible range, but it always return 0, so mProximityThreshold is also 0.

So boolean positive = distance >= 0.0f && distance < mProximityThreshold;  positive will never be
true.
The cause of this problem is proprietary sensor.msm8660.so, it must set proper Range and Resolution for proximity sensor.

Change-Id: I0cf81fd20f210115cbd6db10c0070b12f1c57336