Change SMTP user name setting to string type
Change SMTP user name setting to string type

This was originally password type because Postmark uses your API Token
as user name and password. Didn't want API Token showing as user name
in plain text under settings.

mafernando/api,projectjellyfish/api,mafernando/api,projectjellyfish/api,stackus/api,sonejah21/api,sonejah21/api,stackus/api,sreekantch/JellyFish,AllenBW/api,sreekantch/JellyFish,boozallen/projectjellyfish,sreekantch/JellyFish,sonejah21/api,AllenBW/api,projectjellyfish/api,mafernando/api,stackus/api,boozallen/projectjellyfish,boozallen/projectjellyfish,AllenBW/api,boozallen/projectjellyfish