Implement additional disbursal information

[rudolfix]

There's a few interesting things after discussion with legal. For disbursals coming from equity, we should be able to provide a link to legal document that is basis for disbursal. that could be necessary for example to pay taxes.

So we would have following data in data (bytes)

• len 0: fallback to default: default recycle period, NEU, no particular documentation
• len 20: contains proRataToken address, otherwise defaults
• len 20 + 32: contains proRataToken address + uint256 of recycle period