es_ES: Added spanish translations

Change-Id: I41ecda8dd6d65bd0efa66bae447ba20c2a5d5445
Make capitalization of relative date strings consistent for German
locale.

Change-Id: I4978e00a7944540c378b4a163df32a4e3772b4a3
Merge "es_ES: Added spanish translations" into cm-10.1
Add back backlight brightness curve adjustment.

Change-Id: I58408111d6366a281303afb469d78588ae88d275
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1