Themes: Fix icon filters clamping to wrong values

Change-Id: Iab3cce465f8bdfd7c30a020fda254728349c5ebe
Themes: Make sure composed icon info is meaningful

We don't want to try and create a composed icon if the parts that
make up a composed icon are not valid or set.

Change-Id: I3d9e7432e4b351de9c0a4e662e028932ee7f08e2
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