Block application install from unknown sources through adb

adb install command  doesn't check source of an application.

This change enforces that adb install command only works if user has
download/install from unknown sources selected in settings app.

Change-Id: Id0d328d1dad36089802d6bec2f5d2f940e045c25
NumberPicker: Don't filter Bengali-Indic characters

Add Bengalese digit characters to the digit characters list of
NumberPicker.

CRs-Fixed: 530201

Change-Id: I32445660c2c2a451c71f5a235ee71ae906660f12
NumberPicker: Don't filter Devanagari-Indic characters

Add Devanagari digit characters to the digit characters list of
NumberPicker.

CRs-fixed: 530201

Change-Id: I0f5b273679e3f0bb478c8a6f0609b1bb8a0fac11