Calculate points based on value after subtracting fees

[kkosiorowska]

Closes #867

We are estimating points on the deposit form based on the deposit amount entered by the user. we think the points should be calculated on the value we estimate the deposit will have after fees subtraction (i.e. "You will deposit" amount).

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[michalinacienciala]

Tested on mainnet LL:

You will deposit shows 0.139 BTC, points per day show +140. Shouldn't it be +139? Or is it justified by different handling of rounding in the points calculation script and in the You will deposit calculation?

[kkosiorowska]

You will deposit shows 0.139 BTC, points per day show +140. Shouldn't it be +139? Or is it justified by different handling of rounding in the points calculation script and in the You will deposit calculation?

Yeah, the difference is rounding. @nkuba how should we round the number? Should the user see the number 140 or 139? Should we round the number of points up or down?

[nkuba]

@kkosiorowska Round down, please.

[kkosiorowska]

@kkosiorowska Round down, please.

Done - fdd748f

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