Adding a basic UI overview tutorial when the app if first launched.

Simple tutorial of the UI components which is given once. We can also control to prompt the tutorial again in the future if a new tutorial is needed per the TUTORIAL_VERSION number. Probably needs some work with the descriptions. Feedback encouraged @ktind @trhodeos @jasoncalabrese
Hmm, this is weird. I'm cool with merging it for now, but we should think of something better for the future.