Creates appointment model
Changes assoc in Appointment model
Creates migration for appts table
Corresponding schema changes
  * added appointment table/model
Creates unread messages partial and renders on user home
Fixes associations among businesses, conversations, messages, users
  * assigns business_id automatically to new conversations
Fixes link address for calendar icon in navbar
Adds appointments resource in routes
Defines appointments to render on user home
Styles appointments on user home
Adds appointments partial to render on user home
Adds appointments controller
Adds appointments views folder
Styles appointments list page
Adds class for appts scrolling div in welcome_home.css (wip)
Wraps appointments list on user home in appts-scroll div
Appointments page wip
Merge pull request #8 from krnwonseungee/Scheduling

Scheduling