changed tab index references to use an enum, refactored all UI changes to tab controls to a single method.
changed tab index references to use an enum, refactored all UI changes to tab controls to a single method.

mlilback/rc2SwiftClient,mlilback/rc2SwiftClient,mlilback/rc2SwiftClient,mlilback/rc2SwiftClient,mlilback/rc2SwiftClient,mlilback/rc2SwiftClient