Merge pull request #116 from gitMbar/dev

Store checkinID in database, catch undefined user case for getUserData
Markers clear when toggling between friends
Modify fourquare parsing to add checkinID
Merge pull request #117 from vreddy18/master

Modify foursquare processing to add checkinID
Add server side route and function for adding checkin to bucket list
Merge branch 'dev' of https://github.com/gowaddle/waddle into dev