Missing dependency in concentrationMeterNode

[arouinfar]

For #296

Instances of labelText and valueText in the Studio tree usually link back to the associated StringProperty or dependencies. This is missing in *.concentrationScreen.view.concentrationMeterNode.bodyNode.valueText which seems like an oversight. @pixelzoom can you take a look?

Here's the current tree structure:

[pixelzoom]

valueText.stringPropery is actually derived from 5 other Properties. Anyone who actually looks at this is likely to say "nevermind", so that's probably why I didn't instrument it. But it's instrumented now. Back to @arouinfar for review.

[arouinfar]

valueText.stringPropery is actually derived from 5 other Properties. Anyone who actually looks at this is likely to say "nevermind", so that's probably why I didn't instrument it.

Oh, that makes sense now.

Back to @arouinfar for review.

Looks good in master, thanks!