runtime: Elections - `voting` and `revealing` stage lengths

[mochet]

Problem

Currently the voting and revealing duration are the same. As the mainnet has evolved socially it appears that there is more demand/sense for a longer voting period than a revealing period as candidates do things like interviews, reply to Discord questions, forum posts etc that may be premature to do while the announcing stage is still active. I do not currently sense that much valuable information comes from candidates themselves during the reveal stage besides for people revealing their votes. It seems that the reveal stage has less social value than the vote stage.

Solution

Have the voting stage be as long as possible compared to the revealing stage. Currently they are both 3 days, and if the current 15 day council term length were to be kept the same, I would suggest voting be changed to 4 days and revealing to 2 days. If the council term is extended to 30 days this may not be as much of an issue, depending on the duration of each stage.

┆Issue is synchronized with this Asana task by Unito

[traumschule]

It was also suggested to increase the term to a month. Then having one week to vote and three for revealing would leave 20 days to announce.

[bedeho]

Superceeded by https://github.com/Joystream/joystream/issues/4866