scaffold invoices
scaffold model invoice_line_item
destroy wrong model generate
scaffold model invoice_line_item
complete all models
make it tenant
fix scope
remove user ref
extend comments
add possibilty to destroy own user and all belonging customers and invoices
show only current_user
improve tenantize of current_user
make tenant user profile editable
add invoice_line_items form to to invoice form
remove unneeded var
add rest for line items
change invoice controller
add id for line_item
improve invoice line item handling TODO: line item destroy on destroy invoice
add destroy for line items when desroying invoice