add paid, posted, and canceled ToggleButtons to top treeview in invoice history window load canceled invoices in invoice history window add paid, posted, and canceled ToggleButtons to invoices tab in contact history window load canceled invoices in contact history window finish inventory calculations/entries for invoices finish inventory calculations/entries for purchase_orders finish inventory calculations/entries for manufacturing under administration, admin login/logout does not clearly reflect current state in certain tests admin login/logout should use the Postgres database password/username add icon to contact history window to add more window keybindings in keybindings.py and the com.github.benreu.pygtk-posting.gschema.xml file organize window keybindings window names in alphabetical order (except for the first one) pdf attachment output window no longer scrolls after it is finished optimizing a pdf add feature for split entries in double entry accounting