Fix CHAR_LIMIT for strings

Bug: 20877857
Bug: 20815563

- Condensed strings to one string.xml with translatable="false".
- Made functions and digits NOT localized.
- Switched to U+2007 character for unknown digits.

Change-Id: I51a108309ccfa9c40edd6f87f9e052ba7ee25e3a
3 files changed