Client Accounts implementation document - Goal: The objective of Client Accounts is to enable the management/tracking/etc. of payments that your customers have made to you - based on invoices created with Simple Invoices

Stage 1: - implemented 20060828

    * Basic implementation
    * Add the fields, Total, Paid and Owing to the Manage Invoices and Manage Customers page
    * Add Process Payment option to Manage Invoices, Client details, and Quick View
    * Client details: show in the client details page the list of all the invoices for that client and there payment stats.
    * Quick View: add a payment details for the invoice and show a summary of that customers Total, Paid and Owing stats 

Stage 2: - implemented 20060909

    * Add an Accounts/Payments menu
    * Create a Process Payment page where you can select an invoice and process a payment (different from the process_payment in Stage 1)
    * Create a Batch process payment where you can process say 10 payments at once - removed
    * Create a Manage Payments screen where you can view sort all the payments - Non editable - but can add payments from here 

Stage 3:

    * Reports: create some basic reports to report on payments
    * ? New Invoice - look at adding an autocalc js into the New Invoice page and maybe add a payment fields there - so its an all-in-one page
    * Add a tick box into the New Invoice pages to say: mark invoice as paid in full" so it'll automatically process a payment for the total of the invoices - Usefull for generating receipts 

Stage 4:

    * Reports: create more advanced and detailed reports -- ie, Days overdue reports etc.
    * Add in the Quick View a 'Generate' option to enable the printing/pdf/xls/etc.. of any other invoice preference -- ie. there'll be a drop down list - if if you created and invoice - you'll be able to select 'Receipt' from the list and it'll print(or whatever action you select) a Receipt of the Invoice 

Stage 5:

    * Manage Invoices - add a days overdue field
    * Add a System deault ?/maybe? where you can specify the default payment period and base the overdue stats off that and the invoice create data