fix currency_format

[huglester]

With old formating in place, you will have ambigous numbers.
not sure why it is needed at all here.

we format value, add prefix/suffix and thats it!

thanks

[RyanThompson]

Can you explain "ambigous numbers"?

The purpose is to take 10.013 and convert to 10.01 and 10.377 to 10.38

[RyanThompson]

I am going to close this for now and wait to get some heavy real world testing. I don't like the string thing (also it returns a string) also. Might revisit but I need more experience with it / proof of concepts for the two approaches.

[stefanpkc]

I don't want to reopen this, but just for when this takes off again, there's an argument not to use floats or decimals at all. Only for presenting/printing out values you divide by 100 to get the decimals.