Find function within the allocations screen has been improved so that when a
match is found the scrollbar automatically moves to bring the match into view.
Corrected logic that determines if buttons should be enabled or disabled within
the allocation screen.
Column alignment and heading text on grids within the allocation screen has been
modified to optimise the available screen real estate and improve clarity.
Clear selected allocations command now clears the values (sets quantities to zero
for the selected item or items).
Improved the text displayed in warning message when removing all stores.