[review] 66% milestone ready to review

[urianawu]

/cc @codepathreview

if for some reason, gif is not showing, here's the link: http://i.imgur.com/Z4kBt4T.gif
Notification system is under testing, that's way there's so many notifications from same activity or person.

[minhchau273]

👍 Nice work on the second implementation sprint with the Google map! 💯 There's one week left to complete all of the required stories. Excited to see your progress next week!