Notification improvements.
1. Implemented the Constants for Notification.
2. Made AppDelegate a bit cleaner, started to add code to work with Notification related region monitoring. I need the regions, Uber related code and such before I can add the stuff.
3. Finished the notification actions and the setup for them.
Merge branch 'master' of https://github.com/DrunkardsWalk/DrunkardsWalk

Conflicts:
	DrunkardsWalk/AppDelegate.swift
Merge pull request #16 from lee-leonardo/master

Notification improvements.