Use more precise values for dashboard portfolio balance calculation

[AidanGG]

The currently used values from the CoinGecko API do not have enough precision. For e.g. the 3pool (https://www.coingecko.com/en/coins/lp-3pool-curve), the value used in the dashboard is the $1.01 at the top of the page which is returned by the API, but the actual virtual price is the $1.0056330001021672 shown at the bottom of the page. This difference in precision is not entirely negligible.

[antonnell]

I agree, CoinGecko should probably increase the precision that they return, Do you have a more reliable source for the USD price of assets?

[AidanGG]

https://www.curve.fi/3pool/ has it under "Virtual Price" at the full precision when hovered over.