Fixed empty region value on custom_s3

app.js

@@ -212,13 +212,17 @@ console.log(self.storages);
 			var attachments = storageData.attachments;
 			for(var i in attachments) if(attachments.hasOwnProperty(i)) {
 				var thisItem = attachments[i];
-				var settings = thisItem.settings;
-				if (thisItem.settings && thisItem.settings.port) {
-					thisItem.settings.port = Number(thisItem.settings.port);
-				} else {
-					thisItem.settings.port = 443;
-					if (type == "couchdb") thisItem.settings.port = 5984;
+				var settings = {};
+				if (thisItem.settings) {
+					settings = _.omitBy(thisItem.settings, _.isEmpty); //filter out empty values
+					if (settings.port) {
+						settings.port = Number(settings.port);
+					} else {
+						settings.port = 443;
+						if (type == "couchdb") settings.port = 5984;
+					}
 				}
+				thisItem.settings = settings;
 				attachments[i] = thisItem;
 			};
 			storageData.attachments = attachments;