Fixing location services permission issues

- Added authorization request key to app plist: NSLocationWhenInUseUsageDescription
- Added method to request user permission to use location services
Updated AppDelegate code

- Commented out TestFlight initialization since it is currently not working
- Updated deprecated audio methods to use current counterparts from AVAudioSession
Minor code refactoring

- refactored ambiguous "svc" property to "scheduleViewController" for clarity when reading code
Upgraded location services implementation

- Updated the app to use current best practices for enabling and authorizing Core Location services. I believe this was also causing a crash on iOS 8.
Fix deprecated parameter name

- Changed week to weekOfYear per Xcode recommendation