Add reference field to token manager actions

[lkngtn]

Add a reference field to token manager actions (mint, burn)

User story

As an organization I have the mint and burn actions require a vote and want to be able to differentiate proposals based on a reference field.

Related issues:
aragon/client#841

Technical requirements

• The reference field should be visible within forwarders like the voting app.

[luisivan]

Does this require contract changes or just frontend changes? @lkngtn @sohkai

[sohkai]

This would require at least one of the following changes:

• Metadata included in the token manager's actions (fairly trivial, but adds to gas costs and would be somewhat painful to upgrade to)
• Additional forwarder flexibility (e.g. Proposal: extend forwarding interface to include an optional 'input' parameter aragon/client#452; fairly large cost)
• A way to sync forwarding metadata across orgs (Autark has a similar problem, but solving this without relying on a centralized server is unclear)

[lkngtn]

A way to sync forwarding metadata across orgs (Autark has a similar problem, but solving this without relying on a centralized server is unclear)

@sohkai do you have a link to where this issue has been discussed, would be great to have some additional context.

[sohkai]

@lkngtn Not really... as far as I know it's mostly working off of aragon/aragon.js#314, and it's unclear to me if this metadata API is what we're looking for.

But in the general case, if we could sync a metadata blob across organizations, it's conceivable that users would be able to add information to it to annotate forwarding actions (I imagine discussions would work fairly similarly).

[sohkai]

Closing here; we will track this in the client repo.