Finish Settings Fragment

[artballesteros]

Setting Screen should:

• Have a notifications button switch on or off when a user clicks
• Update the users Notification field in Parse (To allow persistence. There may be better methods.)

note:
https://guides.codepath.com/android/Mobile-Screen-Archetypes#6-settings
https://developer.android.com/guide/topics/ui/settings
https://guides.codepath.com/android/Storing-and-Accessing-SharedPreferences