Move header to the left side of the screen for landscape users

[gisellegk]

so something like this blog http://thinker3197.github.io/ink/

where the "header" stuff is on the left side of the screen.

It doesn't really matter if it's on the left or right tbh but the advantage to this is hopefully we'll be able to see the entire board on the screen in addition to the controls.

Of course this is irrelevant in portrait view for mobile users.

[TJScalzo]

In working on this I've realized we made an odd choice in styling nearly the entire board with vw as the unit rather than something static. This isn't technically a problem. I've just noticed that the padding between the tiles of the board gets kinda small at smaller widths. I'm not sure if it's worth completely redoing the styles in pixels unless there's a bigger issue on smaller screens the I'm missing. Either way, this is just for fun so it's not like it's a huge deal or anything.