Merge pull request Mailtrain-org#1091 from Mailtrain-org/fix-1046

Fix for Mailtrain-org#1046

Merge pull request Mailtrain-org#466 from balping/patch-1

Ignore more config files

Latest version that runs on Nodejs v6

Added option to skip DNS check for imports, new widget feature

Added support for multiple HTML editors

Fixed multiple security issues

Reverted license back to GPLv3

Added support for AWS SES

Allow spreading sending queue between multiple processes

fixed syntax error