Adds invoice routes
Adds invoice to navbar
Creates invoices controller
Invoice migration + corresponding model associations
Adds invoices to seed file
Adds due date and paid on time columns
Tentative changes, displaying 1st 3 appts on user home page for now
Changes to invoice controller routes
Creates invoices view folder
Creates appointments#edit
Changes fonts
Merge pull request #12 from krnwonseungee/Finances

Finances
Merge branch 'master' of https://github.com/krnwonseungee/PocketSOHO into Messaging
Creates inboxold file, uses angular for filtering messages