Query Parameter to hide "Show Electrons" checkbox no longer works

[arouinfar]

For phetsims/tasks#781.

The query parameter previously used to hide the "Show Electrons" checkbox no longer works. My suspicion is that the addition of the "Labels" checkbox to the panel may be to blame.

Here's the query parameter in question:

?phet-io.expressions=%5B%5B%22circuitConstructionKitBlackBoxStudy.exploreScreen.view.displayOptionsPanel%22,%22setVisible%22,%5Bfalse%5D%5D,%5B%22circuitConstructionKitBlackBoxStudy.blackBoxScreen.view.warmupSceneView.displayOptionsPanel%22,%22setVisible%22,%5Bfalse%5D%5D%5D

[samreid]

In the above commit, I added 2 query parameters.

showElectronsCheckBox=false will hide the electrons checkbox, while leaving the "labels" checkbox

showControlPanel=false will hide the entire panel (with both labels and electrons, and eventually more controls to come in the dc version).

Leaving open for verification when rc.2 is ready.

[samreid]

Ready for verification in http://www.colorado.edu/physics/phet/dev/html/circuit-construction-kit-black-box-study/1.1.0-phetiorc.2/circuit-construction-kit-black-box-study_en-phetio.html?phetioStandalone&showElectronsCheckBox=false

and

http://www.colorado.edu/physics/phet/dev/html/circuit-construction-kit-black-box-study/1.1.0-phetiorc.2/circuit-construction-kit-black-box-study_en-phetio.html?phetioStandalone&showControlPanel=false

[phet-steele]

@samreid they work for me, nice work! I'll assign to @arouinfar to check out so she is aware.

[arouinfar]

@samreid looks great, thanks! These new query parameters are much easier to remember too. :)