This patch adds a new page which can be accessed via the menu to the
left of the point of sale page. This new page displays a list of
transactions since the last 'cashup' action, a summary of transaction
amounts and a button to allow the recording of a new 'cashup action.
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com> Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io> Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>