Settings: add development animation transition mode 0.75

Change-Id: Iaaeb3757ef9b3b97d66d929629e9035ab511f72a
Settings: correct 0.75 animation scale for other lanuages and add 0.25

and a small cleanup for warnings

Change-Id: I07256fadacd0405b5049252b6bc3da9850adc3d1

Conflicts:
	res/values-ar/arrays.xml
	res/values-fa/arrays.xml
	res/values-iw/arrays.xml