Merge pull request #57 from macqueen/master

modal for logged out users working
Merge pull request #58 from macqueen/master

server side handling of non-logged in users submitting links + a few other fixes
Merge pull request #59 from macqueen/master

another attempt to fix the modal closing
Merge branch 'master' of https://github.com/ReadUpCode/readup
getting upstream changes
jsonp requests to stack overflow api