Initial currency format commit. 99% was auto-converted with the following regexes in vim:

:%s/¤\(\([$_]\w\w\+\(\.\w\+\)*\|\d\+\)\([+*/-]\([$_]\w\+\(\.\w\+\)*\)\|\d\+\)*\)/<<print cashFormat(\1\)>>/g
:%s/¤<<print \([^>]\+\)>>/<<print cashFormat(\1)>>/g