made button labels > ' < and > " < non-translatable

These are the ASCII characters typed in that shall be auto-corrected to
typographic quotes defined in locale data. It makes no sense to
translate them.

Change-Id: Ied9c53950882b6dd3bf65a044c3ecc34bd5becaa
(cherry picked from commit 958ec1b6e1b87c541521fd7faf2f72931c170702)