Normalize the text and HTML body types for EmailMessage.
Review Request #10471 — Created March 27, 2019 and submitted
EmailMessagenow accepts both byte strings and Unicode strings for the
text and HTML bodies. These are normalized to Unicode strings, which are
compatible with the implementations on both Python 2 and 3, and across
the range of Django versions.
Djblets and Review Board unit tests pass on Python 2/3 with Django 1.6
E303 too many blank lines (2)