Market data error

[abitmore]

The data on https://blocksights.info/#/markets is clearly wrong.
(btw why 128 hours? It does not make sense to me.)

And the chart on the main page too.

At the same time, data on reference UI:

Note: related to bitshares/bitshares-explorer-api#80

[sschiessl-bcp]

Fixed landing page markets

On markets page, no reason really, 128 was not so boring as doing 24 hours all the time. Maybe the 24hour average of the last 7 days? Fixed the sorting according to BTS equivalent base volume too

17a10d5