Added ability to temporarily disabled jobs

Hey everybody.

One of the requested features I got from a user was the ability to temporarily disable a job so it would not execute and none of its dependents would execute. I've made a bunch of changes to the backend and frontend to support this and from what I've seen it works fine. The front end stuff isn't fully done yet, I'm not the best at CSS or javascript. Right now the div that contains the Job Status stuff doesn't look really great because it's not spaced right. I also plan on changing the graph to support showing disabled jobs. I'm looking for some help with the front end and some heavy testing for what I changed on the Scala side of things. Hope to hear from you soon.