typo: method must be static

Change-Id: I5db765e0758de62295d101b2fdfc6a4fdf6e40e9
Medium-heavy-handed RTL approach

Make sure we are giving all the polite directionality hints.  This should
make thank-you letters appear RTL even in LTR mail clients.

Change-Id: I41f195c34d3af80837c9631a6413e24990b16318