Rename column: name -> title
Remove validation
Rename bills paid_at -> billed_at
Add place_id to bills
Fix validation to follow column rename
rails generate scaffold bill

rails g scaffold bill amount:integer title:string billed_at:datetime meta:text place_id:reference account_id:reference payment_id:reference --skip-migration
payment_id -> expense_id
Bill belongs to account and place
params[:meta] comes in String
Expenses#index like Bills#index