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
users are now able to request drawings from other users
slightly polished UI
Merge pull request #13 from wendinglu/drawingboard

Drawingboard
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Merge branch 'master' into ui
users can now respond to requests
changed drawing and request schemas to keep track of whether or not a request is active and which image is in response to a request and what request
added a members lookup table as a passed in value to stream view; makes member lookup easier given their id
implemented feed filtering and display; stream still needs ui polish
Merge pull request #14 from wendinglu/drawingboard

Drawingboard
merge with master
Fixed publish post method bug sending empty request values; implemented forced recipient choosing for draw requests
style changes to draw.js
merge
stream page ui fix
icons