Cost calculation is wrong

[gsipos]

Cost metrics that are above 1000 can be displayed in various ways, like
1 234,567
1.234,567
1,234.567
And it is not currently handled well.

[fpeter8]

Proposed solution:
Collect all numbers as string, and try to figure out the format from all of them before the actual parsing takes place (so if there is a single number where we know the format, we can apply it to the others)

• If it contains two different separators, format is known
• If it contains a single separator multiple times, format is known (the separator is for the thousand, which can be mapped to the fraction separator)
• If it contains space, format is known (1 234,567)
• If it contains a single separator once, and the number after the separator is not 3 digits long, it is a fraction separator

If we don't know the format we should not display a cost estimate as it could be way off.

Possible additional rules (needs checking):

• If the data is bytes (kB, MB, etc.) it might contain only numbers from a specific range before showing it with the next SI prefix (1024 GB -> 1 TB)
• If we figure out the locale (browser, or the page itself) we can fall back to the default format of that locale