UI + Swift 2.3 Conversion (ViewController)

[charleshkang]

UI can be improved, but first converting view controllers to Swift 2.3

[vhart]

@charleshkang swift 2.2, 2.3 or 3?

[vhart]

@charleshkang can you make a single issue per view controller you plan on changing. And change the issue title to that conversion. thanks!