Handle the case when the user replies to a message they wrote

In this case, it really means "re-send" to send it to the
other recipients

Fixes part of b/6318420 Double reply in a thread sends to myself
NOTE must check for a custom from in a future thread
Add "isCustomFrom" check to compose so we can do that properly

Change-Id: Ic93261a7d825cf8d38410172687f29a7d15d0219
1 file changed