views/home: Use ThreeSigFigs to display difficulty on homepage

[matthawkins90]

This is a quick fix for displaying the difficulty on the homepage. I just changed it to show the raw value instead of being divided by 1e6 and showing a "Mil" value.

I thought about trying to do something complicated and make a scaling value that switched formats if it became longer than 1e6, but I don't think it's worth the time investment it would take me.

[davecgh]

I'll leave this one up to the dcrdata maintainers since it might be a controversial change without dynamic scaling. That said, I provided code in #1973 for dynamic scaling.

[matthawkins90]

If dynamic scaling is important, I think I would like to get some feedback about how it should be displayed. Difficulty is unitless, so it just needs some kind of easy-to-interpret "scaling" suffix.

1234 = 1.23 k? 1.23e3? 1,234?
10000 = 10 k? 1e4? 10,000?
100000 = 100 k? 1e5? 100,000?
1000000 = 1 Mil? 1 M? 1.00M? 1e6? 1,000,000?

I don't think it's too hard, but I actually kinda like how it looks as 356,765, without decimals or scaling factors, so I didn't want to change it to something weird like 3.57e5 or 357 k

[xaur]

1eX style is hard to read. If there are more than 3 digits it needs a thousand separator 356,765. Mil looks odd. IMO.

I vote for 999.00, 1.23 K, 10.00 K, 100.00 K, 1.00 M. Spelling out thousand, million, billion is also fine.

[buck54321]

What about humanize.threeSigFigs?

[matthawkins90]

Yeah, threeSigFigs is the easiest solution here. It already converts Floats into 3 digits with a possible "k", "M", or "B". The only downside is that it's formatted like 123k instead of 123 k, but all the other places using threeSigFigs suffer from the same problem. I could update it everywhere, but I think it was designed to look that way intentionally.

I'm not quite sure if updating homepage_controller.js actually did anything. I tried it multiple different ways, but everything looked fine regardless of what I did to homepage_controller.js. Please let me know if I need to revert that file.