Feature: remove a proposal by the owner

[ashcherbakov]

As a Trustee who did the proposal, I can remove it if there are no votes for it yet, so that proposals sent by mistake can be easily removed without requiring 2/3 of Trustees to vote reject.

Note:

• Can be done only by the Trustee who sent the proposal
• The proposal can be just removed from the state, no need to keep it

[wc-smith]

I suggest we further consider under what circumstances a removal can be initiated and what steps must be taken to effect a removal. The suggested resolution is not sufficient when one or more approvals has occurred yet removal is the appropriate action.

It may be that one or more additional states is required; perhaps disputed/challenged, abandoned. If a proposed action is disputed/challenged, it could no longer be approved, until the dispute/challenge was resolved. Once resolved a proposal might be abandoned (or returned to the proposed state). Of course we would need to define mechanisms for resolution/disposition of disputes or challenges.

We're seeing significant latency in trustee approvals. I am concerned that the proposed solution requires that errors be caught quickly and if not caught before one approval, the proposal must be approved, leaving the DCL with incorrect information until a removal request is issued and subsequently approved.

[hawk248]

Defer until next meeting.

[hawk248]

Voting in mainnetv1.0 will allow reject during trustee approval phase.