Fixed issue 63: `Webpage shows a 'loading' wheel in tabs even when fu…

[Faleidel]

trafficstars

…lly loaded` by changing some contentDocument.write to creating scrip elements and appending them to the document.

Fixed opening the code editor making the page scroll vertically because the editor was taking a bit too much space.

[chrispsn]

Thank you for this! Is it necessary to put the code in app2.js or can it all be in the existing files?

[chrispsn]

FYI - I separately committed the display fixes (thank you) as I need to think through the separate file thing.

[Faleidel]

It doesn't need an other file. I was under the impression that app.js needed to stay as it was to be reused in other context? I think I was just confused...