Merge pull request #9 from pasharayan/master

created header for groups page, changed article model for a quick fix (added, userid, groupid, topicid)
Merge pull request #10 from pasharayan/master

styled the signed in home page
Merge pull request #11 from pasharayan/master

rails night changes, added before_save paragraph id create
Merge pull request #12 from pasharayan/master

moving jquery works
add comment form on articles#show
fixed conflict on merge
test