Merge pull request #8 from petrus-jvrensburg/master

start populating accordion
Debugging request
Debugged!

Ha ha! Though I don't get why the error existed.
I used console.log to check outputs.

and for the calculate_rent section it was outputting a string variable.

This led the total variable to become a string variable when it was
adding everything up.

And then the output percentage just stayed at 0%

I used Math.round to force it to become a value - but I didn't need to
do that for other variables.

Weirdness.
Some more adjustments
Focus on first form input and give default values to the rest. Improve display of output variables.
Toggle output panels when clicking anywhere on the panel heading.