* Keep track of volunteered tasks.
Merge https://github.com/App6/VolunteerBeat

Conflicts:
	res/layout/activity_home_screen.xml
	src/com/codepath/app6/volunteerbeat/activities/TaskDescriptionActivity.java
	src/com/codepath/app6/volunteerbeat/fragments/ApplyTaskFragment.java
	src/com/codepath/app6/volunteerbeat/models/UserProfile.java
* Disable 'I Can Volunteer' button after finishing Volunteer Dialog.
* Set dummy posted date.
* Move due date to Dec.
Merge https://github.com/App6/VolunteerBeat

Conflicts:
	src/com/codepath/app6/volunteerbeat/models/Task.java