Settings: fix NPE

if the user resumes InputMethodAndLanguage settings and
the user dictonary preference was already removed before,
the user will run into a NPE.

check it to fix it.

Change-Id: I1eac844720768bb668e26f0a572c7876b7b0bcee
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