Alternate Writer Landscape Layout

[stowellm]

Landscape layout of Writer isn't really optimal. Should have, for example, dataset name/add data point/save controls on the left side of the screen taking up ~35% space, and have the data cards on the right side taking up the remaining 65% of the horizontal space.

This is a post-release enhancement, don't worry about it for now.

[bdonald25]

I am going to do what facebook does and have the buttons disappear when you scroll down and then reappear when you scroll up. I think it looks bad with the buttons on the side.