UI Design & Core Data

- Worked in most of the planned UI to the storyboard.
- Did a nice rework of the Settings UI, so it's pretty and abides by
iOS conventions, such as those used in Settings > General in iPhone.
- Entity "House" now has all the necessary fields for the house detail.
- Entity "User" has the user's settings.
- Additional data entities to track Guide label state and App state.
- UI also includes the initial PIN for the survey code.
- Exit Survey Code screen?