Fix。 
1) [Front-end]Collection amount calculation is incorrect. It should be
Cash_In_Drawer - Next Open Balance
2) [Front-end]When introduce S$1000 , the sum value will be change when
scroll up and down the "Dollars list'
Note: The current Portrait series was introduced in 1999, with the 1 and
500 dollar denominations omitted
3) [Front-end]When user trying to delete bar-code text from Android
Default Keyboard, the 'backspace' is not working