Allow ChargeBookingTemplate.amount with no date.
Allow ChargeBookingTemplate.amount with no date.

huerlisi/bookyt,huerlisi/bookyt,hauledev/bookyt,gaapt/bookyt,gaapt/bookyt,silvermind/bookyt,gaapt/bookyt,hauledev/bookyt,xuewenfei/bookyt,silvermind/bookyt,huerlisi/bookyt,wtag/bookyt,xuewenfei/bookyt,wtag/bookyt,gaapt/bookyt,wtag/bookyt,xuewenfei/bookyt,silvermind/bookyt,hauledev/bookyt,hauledev/bookyt,silvermind/bookyt