Merge pull request #11 from wendinglu/drawingboard

Drawingboard
added login
Family page displays family members info
Can click on a member box to login as that family member
Can click on a member box to login as that family member
Merge pull request #12 from wendinglu/login

Login
fixed mongodb bug for newer versions of mongo where $set cannot be missing or empty
integrated user/family data with drawingboard. current_user and family are no longer hard-coded; sending functionality enabled
integrated family/users into requestDrawing view, implemented modal for request in stream