Fixed incorrect parsing of numbers with more than one comma.

Not sure if I should submit this against master or the waterfall branch, but there is a bug where only the first comma is being trimmed when sorting cells. As a result, any times larger than 999,999 microseconds are mixed in with other results when you sort, rather than being at the top of the list.

So:

"200,000,000" would go through `.replace(',','')` resulting in "200000,000", which parseInt interprets as 200000.

I'm using a regex to replace all commas, instead.