Add amino acids properties

[#40646805]
Add script generating amino acids properties

[#40646805]

This is simple script generating JS file with amino acids properties. Keep it as it may be useful during further work on proteins engine.
Fix typos in error messages
Create elements representing amino acids

[#40646805]
Change default color of force vectors to green

[#40361287]
Add section about MD2D simulation stepping to project readme

[#37941077]
Update "About" section of the "View Refresh Rate and..." interactive

[#37941077]
Update "View Refresh Rate and..." interactive (add timeStep slider)

[#37941077]
Remove unnecessary check for Safari in arrays module
always show model clock in benchmark interactives

Allows easier manual comparison of model progress with actual
clock time.

Also always use the play/reset/step widget.
limit decimal places in fps alert
move first line of about to subtitle

The subtitle is automatically included when the content
for the About box is rendered.
add numericOutput Interactive widget

[#40871469]

added numericOutput widget to example:

/examples/interactives/interactives.html#interactives/basic-examples/output-properties-and-custom-parameters-demo.json
numericOutput: style improvements

[#40871469]

Also remembered to duplicate styles to embeddable.sass

FIXME: DRY-up styles for Interactives to reduce duplication
numericOutputs: get label and units from propertyDescription

[#40871469]

You can either specify the label and units or just let
them be extracted from the propertyDescription
use numericOutput for num of atoms inside ballon

[#40871469]
use numericOutput for gas-laws page 3 volume display

[#40871469]
Add test checking amino acids properties, fix unit conversion

[#40646805]
Add first interactive and model with amino acids

[#40646805]
Use more complex model for amino acids conversion test

[#40647279]