Remove duplication of vote items descriptions

[arwer13]

There are two vote item descriptions:

1: reference="Initial DAI funding Pool Maintenance Labs Ltd. within Nov'22-Apr'23 budget", which goes into Aragon Finance NewTransaction event

2:

    vote_desc_items = [
        "1) Send DAI 1,500,000 to Pool Maintenance Labs Ltd. 0x17F6b2C738a63a8D3A113a228cfd0b373244633D",

which goes to Votings bot notifier

And usually the first description is more about "why and what in broader sense" and the second in more about the specific on-chain actions.

Maybe we should use uniform description, just exclude info about the addresses and values from NewTransaction event

And the question is in what form the unified description should be.