Add other mass name to "go-beyond-edge" alerts

[terracoda]

In following up to issue #135, if there is time please add the other mass's name, so these "go-beyond-edge" alerts so they would look like this:

Random examples for mass 1:

• Farthest from mass 2, force arrows tiny, forces 0.7 ‪newtons‬.
• Closest to mass 2, force arrows tiny, forces 39.5 ‪newtons‬.
• Extremely close to mass 2, force arrows very small, forces 144.2 ‪newtons‬.
• Very close to mass 2, force arrows huge, forces 1067.9 ‪newtons‬.

Random examples for mass 2:

• Extremely close to mass 1, force arrows small, forces 184.7 ‪newtons‬.
• Far from mass 1, force arrows tiny, forces 11.5 ‪newtons‬.
• Very close to mass 1, force arrows large, forces 454 ‪newtons‬.
• Farthest from mass 1, force arrows tiny, forces 21.7 ‪newtons‬.

As mentioned in #135 (comment), I don't want this request to block this sim from going into Dev Testing.

If logic to handle this request does not already exist, we could make this addition when we are finishing off GFL Regular. I am marking as low priority (so as not be a blocking issue).

[zepumph]

Implementing this simplified some of the code, so it was nice to do as part of the code review in #134. @terracoda please review.

[terracoda]

Awesome, I'll verify in the morning ;-)

[terracoda]

Adding the mass name to these edge alerts sounds awesome to me! Thanks for adding this nice polish to the alerts. Closing.