MIRTH-3108: Maps from the merged connector message are now being included on the Velocity context on message export. Before we were purposefully excluding maps from the context because we didn't know whether or not they would be encrypted. However now we make sure to do the replacement before map content encryption occurs.
MIRTH-3175: Fixed an incorrect tool-tip on the File Writer.
When a message errors when using the File Reader, the File Reader will now continue to the next file instead of breaking out of the current poll. 

Improved error logging on the File Reader. 

Removed lingering remnants of Mule by renaming variables and errors.
Issue: MIRTH-3109
MIRTH-3104: No longer using Commons Validator to test the to/from addresses in the SMTP connector service. In fact, JavaMail is _already doing this_, so we don't need to. The exceptions that get thrown are already quite informative as well.