Missing updates in Client Guides

[KatieWoe]

For phetsims/qa#636. In client requests there is a request to hide the generation clock. But the instructions provided do not match anything in studio.

[KatieWoe]

This also seems to happen for hiding the environmental buttons

[pixelzoom]

Good catch.

It looks like files in phet-io-client-guides/natural-selection were not updated after adding environmentPanel to the tandem hierachy for for #263.

I've fixed client-requests.md in the above commits (@amanda-phet please review), and the revised tandems are:

naturalSelection.introScreen.view.environmentPanel.generationClockNode.visibleProperty
naturalSelection.labScreen.view.environmentPanel.generationClockNode.visibleProperty
naturalSelection.introScreen.view.environmentPanel.environmentRadioButtonGroup.visibleProperty
naturalSelection.labScreen.view.environmentPanel.environmentRadioButtonGroup.visibleProperty

It also looks like linked-property-example.png and studio-overview.png need to be revised, since they show the part of the Studio treee that has changed. I can't revise them because the assets used to create them are not checked in. (That appears to be general problem with all client guides, so I've created https://github.com/phetsims/phet-io-client-guides/issues/10 to resolve that.) @amanda-phet can you please revise these images with top priority? (This is blocking the PhET-iO team from commiting some work to master.)

[amanda-phet]

I created these updated assets. If it's ok for me to commit them to master I can do that, but I wasn't sure so just putting them here for @pixelzoom.

[amanda-phet]

I see the revised tandems as well.

[pixelzoom]

@amanda-phet The files that you've included in #268 (comment) have totally different than the dimensions of the files in GitHub. Their resolution is significantly lower. Does that matter?

linked-property-example.png is 2880 x 1578, yours is 1531 x 840.
studio-overview.png is in the ballpark of 2720 x 1084 yours is 1872 x 752.

[pixelzoom]

@amanda-phet sent me another set of PNG files via Slack. The resolution is higher, but the dimensions are still off. She checked with @arouinfar, and "there is no scientific process for creating the screenshots". So we decided to go with these files, and I've commited them above.

I tested by doing a local build, then inspecting the "PhET-iO Guide" and "Client Requests" links in the Wrapper Index. I didn't see any problems.

I'll labeled this a ready for QA verification.

[pixelzoom]

To verify this issue:

• In "Client Requests", check the modified tandem names shown in Missing updates in Client Guides #268 (comment).
• In "PhET-iO Guide", check the modified image files shown in Missing updates in Client Guides #268 (comment).

[KatieWoe]

Looks good in rc.1