[added] mayors may send email to all residents using "citizens" as
receipient
[added] "citizens" to resricted names list

Change-Id: I66639f854a5c216d76b7fae8d2925b4f1f89c6bc
Merge "[added] mayors may send email to all residents using "citizens" as receipient [added] "citizens" to resricted names list" into unstable