[Graphs Screen] Layout for speedometer

[jessegreenberg]

The mockups for the graph screen show a "Speed" checkbox but no speedometer. The default position for the speedometer is right behind the "Energy Graph" accordion box, so the speedometer is hidden when the accordion box is open. Do we need to fit the speedometer somewhere else in this screen?

[arouinfar]

From #106:

Problem Description

For phetsims/qa#397. In the "Graphs" screen, the speedometer is stuck behind the energy graph. Part of the speedometer is cut off by the energy graph. The energy graph is open by default, so by default it looks like checking the speedometer checkbox doesn't do anything.

Visuals

[jessegreenberg]

@arouinfar will consider this. We thought about making it a bit smaller and putting it in the lower left of the screen around the mountains in the background.

[arouinfar]

@jessegreenberg let's try this layout

[jessegreenberg]

Done above. I didn't have to change the size of the speedometer and it still seems to match what you have in #88 (comment). Not sure if you adjusted the size at all for this screen. How does master look? Let me know if you want it any smaller.

[arouinfar]

Looks good in master @jessegreenberg. I like the consistency of keeping it the same size across screens, so let's leave it as-is.