updating profile fields to allow plugins (e.g. the write-api) to change a user's profile picture

@barisusakli please let me know if this is not ok.

src/emailer.js

@@ -90,6 +90,7 @@ var fallbackTransport;
 			},
 			function (results, next) {
 				var data = {
+					_raw: params,
 					to: email,
 					from: meta.config['email:from'] || 'no-reply@' + getHostname(),
 					from_name: meta.config['email:from_name'] || 'NodeBB',