Improve Geppetto version of muscle model

[slarson]

A first version of the muscle model is currently out on live.geppetto.org under the default samples. There are still several things that need improving with this. I've asked several questions over in the geppetto samples repo to hopefully get responses from that team on how we can make several of these improvements ourselves:

openworm/org.geppetto.samples#23
openworm/org.geppetto.samples#24
openworm/org.geppetto.samples#25
openworm/org.geppetto.samples#26
openworm/org.geppetto.samples#27

As they get answered, I'll be updating this issue and spinning out some more specific issues to fix each point raised by the questions.

[tarelli]

@slarson thanks for the cards, I replied to all of them, if anyone would like to help out with the features that still need to be implemented/documented don't be shy :)

[tarelli]

This file is where the logic of what happens in the sample exists: https://github.com/openworm/org.geppetto.samples/blob/development/LEMS/MuscleModel/script.js
Feel free to fork/ create PR to improve the sample!

[slarson]

@tarelli Thanks for this! I have created a pull request openworm/org.geppetto.samples#28 to kick off the popup for openworm/org.geppetto.samples#23 Thanks for your fix for openworm/org.geppetto.samples#24. We'll keep iterating on the rest.