Use jstoxml instead of doing string concatenation everywhere

[rauberdaniel]

What do you think about using a dependency (e.g. https://github.com/davidcalhoun/jstoxml) to create a valid xml output instead of doing string concatenations? In my opinion this would definitely make the code easier to understand and maintain.

[ekalinin]

Hey @rauberdaniel

Thanks for the propose.
But to be honest i don't want to add one more dependency.
But will think about it.

[derduher]

We have since updated to use xml builder lib. So we are no longer manually concatenating strings.