Change VoicingPanelSection for Tier 1 Voicing

[jessegreenberg]

PhET is considering a "Tier 1" Voicing feature, which is a subset of the full Voicing feature. We need to change the Preferences Dialog content slightly for publishing with "Tier 1".

"Tier 1" includes everything excpet for object and context responses. So the only change we need to make is to hide the checkboxes that enable those responses.

This content:

• "Voice object details and changes"
• "Voice surrounding context changes"

Needs to be hidden.

Fro phetsims/trig-tour#108.