Email: Refactor default translations

Change-Id: Ib62c7b06d8c32f9d2ce3e9daa27aa0ae4d4fda50
Email: ES translations

- Move CM additions to new file
- Restore AOSP strings

Change-Id: I26eb4564925e00c70e3f842bc9ec9f574f95fb09
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1