Only show link to reference in booking view if there is one.
Only show link to reference in booking view if there is one.

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