Snapshot implementation - Vote calculation

[rossneilson]

Instead of using current total locked tokens we instead need to find the snapshotted total at proposal creation time as this is how snapshot operates.

• Get proposal snapshot ID
• Get voting power of user for snapshot id (has a function)
• Need to investigate how we find total voting power for all users at snapshot ID (after brief search I could not find out how)

We will use snapshotREPGuild for now to test this.

[rossneilson]

For the calculation of (userPower / totalLocked) to get % power we have to treat SnapshotGuild and SnapshotRepGuild differently. Or we need to add another method to the contract.

SnapshotGuild implements snapshot on guild contract level as the token is ERC20

• votingPowerOfAt()
• totalLockedAt()

SnapshotRepGuild implements snapshot on the token level as the token is not ERC20.
We only have votingPowerOfAt() right now but an issue will be made and implemented to add support for totalLockedAt()