Ignore commas when sorting by currency

[dougjohnston]

When sorting by currency, ignore commas for a proper sort. Fixes issue #43.

[Mottie]

This change is not a good idea... some countries use the comma and decimal point the opposite of how it is used in the U.S. (e.g. € 2.156,33 or € 2 324 156,33).

[dougjohnston]

Fair point. For our project, we only deal in USD, so it wasn't something I thought of. Would there be a more suitable fix that accommodates more countries? The current sorting approach (not ignoring commas) doesn't work for columns of currency values. Eg:

$1,995
$1,495
$1,795

[dougjohnston]

I see now that this is a duplicate of #34. That one seems like a better fix because the comma is not hard-coded and the value is configurable. That seems to solve the issue you brought up, no?

[Mottie]

Yeah, I left a comment in that issue on how I solved the problem.