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
Use java.util.Objects instead of internal API

Change-Id: Ib0d797b3e7f2e4f831f52832776b64c0973880b3
[2/2] Settings: configurable rotation

Base: https://gerrit.omnirom.org/#/c/4526/

PS10
unifiy defaults

Change-Id: Ib0da7bfdf374eafeef24fb0b7c90464458d531b3