[#278] Complex batches issues

Description

Resolve issues coming from complex batch transfers.

For this we decided to reimplement fees calculation ourselves, because calling tezos-node to evaluate fees on per-operation basis for operations in a batch is imprecise and even unsafe.

I wanted to add more tests like on batched origination in nettest or on batched operations in morley-client's testing environment, but such things are not supported yet.

After my changes Common.hs module apparently got pretty big, but I failed to invent a name for the new module if I perform a split.

Related issue(s)

Resolves #278 (closed)

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