Remove layouts from card

[dkrasner]

Main points

If the card layout is set to 'list' and there are subparts which are set to take up the remaining space, then it becomes awkward to add other parts to the card. For example, if you take the 'scripting.html' stack currently in this #89 PR, and try to add a drawing to anything to most of the card you won't see it; it will look like nothing happened.

One way to keep the ability to add whatever you want to a card, and to avoid the situation where adding something doesn't result in any perceptible change in the view, is to avoid setting layouts on the card itself. In addition I have found out, and this is personal, that it is much easier to control layouts if you keep to areas as opposed to the card itself. If you want the entire view to be with that layout you can simply set the area height/width to 'fill.' You might think this is the same as effectively setting layouts on the card itself, but in this case you can still add parts to the card and they will appear, without interfering with any of the area layouts.