Adjust/Update State Descriptions (PDOM) affected by interaction change to Light Source

[terracoda]

Changes to the Light Source interaction are in progress in #295 and #296. @terracoda and @Matthew-Moore240 need to review PDOM and address necessary changes to:

• created issues for changes to screen summary - references to slider and rates (New Interaction Hint needed in Screen Summary #306, Best name for Light Sources radio group? #307, Updates to Static Screen Summary #308, Consider new alert and help text for Reset Molecule button #301)
• created issues for observation window (if any) - (Consider new alert and help text for Reset Molecule button #301)
• created issue for new interaction name and help text (and code Representation of photon emitter button in PDOM #296)
• created issue for the dynamic state of the sim sentence (Update to dynamic state of the sim sentence  #312)

[terracoda]

@Matthew-Moore240, we also need to remove the rates in the sentence that describes the "dynamic state of the sim". I will created an issue for that, too.

[jessegreenberg]

@Matthew-Moore240 @terracoda can this issue be closed?

[terracoda]

All issues I was tracking in this issue are closed except for #295. Once that issue is closed, this issue can be closed.

[terracoda]

All issues noted in this issue have been addressed. Closing.