Merging useStepTime -> into App.js

[JackMcPhillips1543]

Closes #50

What was changed:

• useStepTime.js was removed
• App.js was updated to take on all the functions of useStepTIme.js
• Changed the unit tests in App.test.js

Why was it changed:

• useStepTime.js opened an extra websocket that was unnecessary
• The path the step time data had to take was unnecessary
• Tests needed to be altered to fit new app.js

How was it changed:

• All of the functions in useStepTime were brought over to App.js
• Tests were altered by fixing how the rendering process works

[git-voo]

I like this!
Just note that we may have to review the threshold at which different borders are rendered. especially the yellow border. The question is, how close is close enough?