Create Notification Table

Add table to track alerts and warnings but allow it to be organized by resource type of medications, weather, and appointments
Merge branch 'master' of github.com:ProjPossibility/2014-CSUN-CareTaker-1
Update notifications table --> should be who notification is for not who it is by.
Add Notification Model + Controller
Add notification to database seeder
Add notification to routes
View all current user's notifications

Update index() in controller to view all currently logged in user's notifications
Add severity table

Add severity table so we can have names in the severity type in notifications (warnings, alerts)
Merge branch 'master' of github.com:ProjPossibility/2014-CSUN-CareTaker-1

Conflicts:
	app/database/seeds/DatabaseSeeder.php
	app/routes.php
Add severity data when viewing notification