Enable Centrifuge Router on redemptions (if not already enabled)

[sophialittlejohn]

We have programmed all investing and redeeming to go through the CentrifugeRouter contract. Prior to investing enable() is called. If the user invests with the centrifuge router they will also be able to redeem with it. However there are some edge cases where a user may have made an investment before the centrifuge router was installed and now want to make a redemption. For those users we have to called enable first.

• before a redemption check on the CentrifugeRouter is isEnabled is false
• if false call enable() as a first transaction and then claimRedeem in the second

Note: due to a bug in the contracts, enable and claimRedeem have to be called in two separate transactions = two signature