user can visit new invoices page [finishes #60914680]
user can navigate to the create expense page [finishes #60915232]
testing creation of expense
user can create an expense
user can edit expenses [finishes #60915226]
simple attribute creation
user is able to view all clients [finishes #60915122]
user can edit clients [finishes #60915240]
user can create a client
user can navigate to new client page
scaffolded payments
hooked up models
fixed expense scaffold
removed extra migration
fixed put params
fixed expense params
payments being tested
testing deleting of invoices
user can delete clients
only showing clients that are related to user