when editing transaction allow to set account; WIP
first try to filter list of transfer accounts
try to only load accounts that are valid transfer accounts
set transfer account correctly and only need to set filter map if we are dealing with a transfer
made split transaction with new UI where account is selectable. Once we have added split parts, we no longer allow changing the account, since this would require updating all parts
set itemselectedlistener even if spinner is disabled makes sure that account label is set
provide command for inverting direction of transfer, instead of relying on +/- button, does not work yet for split transfer parts
upgrade
account can be edited, thus must handle it when object is updated
when user inverts the direction of the transfer, updating values of spinners does not work for transfer split parts, hence we invert the type, and keep the values, but switch position of the spinners
home button should be called up button
menu icon for transfer invert
hide/show statusspiner based on account type