Fix layout rendering for RTL locales [DO NOT MERGE]

This changeset adds the framework resources for RTL locales and mirrors
the layout if the application is RTL aware.

Use ICU to check the character orientation of the locale - right to left
or left to right. Set the layout direction on the top level layout
accordingly. Also, load the RTL resources for Nav Bar when the locale is
RTL.

Change-Id: I1ed0d516ab64120a0abca413ba678036661508f8
(cherry picked from commit eee0ea7a0b85ea6345eb7b8da5dbf17306c7339c)