remove 'move' button from toolbar

We should remove the 'move' button from the top bar:

![Screen Shot 2013-03-17 at 11 54 24 PM](https://f.cloud.github.com/assets/108094/269153/938a4e5a-8f7f-11e2-9a49-d2fcbfbd1798.png)

I like this, it feels more intuitive to me. I recommend you try it out first if you're skeptical.

I am not concerned about the user not having an obvious way to escape a draw mode after it's been selected. The 'ESC' key is intuitive. We can make this clear in another way if we need to.