Finished basic hud setup

I setup the basic hud as part of the course lessons 2.13 and 2.14 a while ago. I forgot to update the dev log and course. I have a couple bugs. I am displaying the number of stoppers and bullets, and it's possible for it to hiccup and go negative, when it should always be positive. The points and health are not updating correctly. Working on that later. 
I'm working on finishing the last couple of lessons in this course today, so I'm publishing this at the start of the day, so I can show where I left off.