Complete separation of value and logic for Redemption

[benjaminbollen]

builds on #5

• re-implement OpenSTValue.processStaking
• re-implement OpenSTUtility.redeem
• re-implement OpenSTValue.confirmRedemptionIntent
• re-implement OpenSTValue.processUnstaking
• re-implement OpenSTUtility.processRedemption
• add utility chainId to event StakingIntentDeclared
• add value chainId to event RedemptionIntentDeclared
• create OpenSTValueInterface.sol and OpenSTUtilityInterface for Registrar to use
• add OpenSTValue.processStakingForced onlyRegistrar as temporary measure until the signature of OpenSTUtility.processMinting can be carried over
• add OpenSTUtility.processRedemptionForced onlyRegistrar as temporary measure until the signature of OpenSTValue.processUnstake can be carried over

[benjaminbollen]

@kedarchandrayan the new signature for OpenSTValue.processStaking no longer requires the _uuid and returns the address of the staking contract (like OpenSTUtility.processMint returns the address of the utility token)

signature : 865102f#diff-0fda3cb74ade82450f3189d77ba9209dR205

event: ProcessedStake 865102f#diff-0fda3cb74ade82450f3189d77ba9209dR47

on OpenSTUtility I added the token address also to the event (as on ProcessedStake):
865102f#diff-e44aea7e60874b5bcf6ea3206782e8b5R70

[benjaminbollen]

@kedarchandrayan updated signature for

• OpenSTUtility.redeem
• OpenSTUtility.RedeemSTPrime
• OpenSTValue.confirmRedemptionIntent
  and events
• RedemptionIntentDeclared
• RedemptionIntentConfirmed

[benjaminbollen]

• integration tests for protocol completion are tracked in Protocol integration test #14
• fallback for processStaking and processRedemption implemented with first tests for fallback for staking in processStaking and processRedemption fallback #26 ; pending completion of redemption unit tests in
• reverting staking and redemption implemented in implement escrow revert #27 (as forceful processing of costs is now implement)
• implement logic version upgrade for ProtocolVersioned in registrar