fixed history_trade and liquidity_pool asset_id field

[cayod]

This PR fixes the asset_id field in history_trade and liquidity_pool table.

[sydneynotthecity]

The Extract() method for Asset follows a different variable ordering than FarmHashAsset. I think some of the tests are failing due to this change (plus the IDs in the unit test need to be changed.)

I also noticed in the asset.go code that we create an additional hash using the method hashAsset. We return the following output:

return AssetOutput{
		AssetCode:   outputAssetCode,
		AssetIssuer: outputAssetIssuer,
		AssetType:   outputAssetType,
		AssetID:     outputAssetID,
		ID:          farmAssetID,
	}, nil

I think it would make more sense to switch the ID and AssetID to be consistent with naming on other tables:

AssetID:     farmAssetID,
ID:               outputAssetID,

Once the unit tests are passing, I will approve.

[sydneynotthecity]

Looks good, thanks for the updates