added a settlements migration and model to handle payments
partially fixed seed data -- still need bills owned by users
framework for computing money owned in a list for a user
fixed background colors and formatting
fixed margin colors and picture
Merge branch 'master' into expenses_list
working on nav links
updating branch files
fixed merge conflicts
erge branch 'master' of github.com:island-foxes-2013/SplitAmongUs into user_dashboard
modified size of columns and working on width of divs