* receivesidechainwtjoin

* listsidechaindeposits

* getbmmproof

* createbribe

* refundbribe

* Add sidechain deposit button to sendcoinsdialog

* Add sidechain deposit dialog

Add Drivechains & BMM to bitcoin core

* Add GetBWTHash() function to CTransaction so that we don't have to manually
blind the transaction when checking work score.

* Update comments to make them more clear and add TODO messages about what
still needs to be finished in AcceptToMemoryPoolWorker().

* Update comments & code in connect block where WT^ workscore is
verified

* Update rpc client param conversion

* Update createbribe rpc function (WIP)

* Update IsBribe()

* Add BMM ratchet unit tests

* Enforce BMM ratchet block number rules

…#10)" (#12)

This reverts commit 4eb5c1d.

* Refactor SCDB for travis

* Refactor SCDB, move WT^ creation to miner

* Refactor, remove usage of LogPrintf & EncodeHexTx

* Remove util.h dependency from SidechainDB

* test

* Update BMM ratchet and refactor for travis

* Fix initialization bug

The code to watch sidechain deposit addresses shouldn't have been
compling when wallet support is disabled.

* Only create WT^ if ENABLE_WALLET defined

* Fix build errors with wallet disabled

* Fix watch sidechain scripts bug & SCDB bug

* Update comment in listsidechaindeposits rpc

* Remove outdated comments

* BIP 141 style coinbase commitment generators in validation:
    GenerateSCDBCoinbaseCommitment()
    GeneratBMMCriticalHashCommitment()

* When a block is mined, if SCDB is tracking WT^ or BMM data, the miner
will CreateSCDBHashMerkleRootCommit.

* Add CScript functions:
    IsBribeHashCommit()
    IsSCDBHashMerkleRootCommit()
    IsWTPrimeHashCommit()

* Update comments

* Add std::string GetSidechainName(uint8_t nSidechain)

* Add bool Sidechain::operator==(const Sidechain& a)

* Add bool SidechainWTJoinState::operator==(const SidechainWTJoinState& a)

* Add uint256 SidechainWTJoinState::GetHash(void)

* Add bool SCDBIndex::Contains(uint256 hashWT)

* Add bool SCDBIndex::GetMember(uint256 hashWT, SidechainWTJoinState& wt)

* Update ToString() functions

Update sidechain primitives

Update coinbase commitments and drivechain scripts

* Add additional optional data type to extended transactions (CCriticalData)
* Add critical data transaction validation rules
* Add critical data transaction unit tests

* Remove old WT^ tracking code

* Add SCDB hashMerkleRoot based updates & WT^ update network messages (tested
  via RPC). When a new block is added to the tip, we look for a SCDB
  hashMerkleRoot commit and verify the WT^ update messages we have
  recieved over the network to try and update our local WT^ workscores.

* Add receivesidechainwtprimeupdate RPC function to test WT^ update
  network messages

* Remove old unit tests, replaced with updated tests.

* Refactoring:
  - wtxid -> hashWTPrime
  - wtJoin -> wtPrime

* Cleanup:
  - Fix order of functions
  - Rename some functions for clarity

* WT^ creation performance improvement & rename for clarity:
(CTransaction BlockAssembler::CreateWTPrimePayout(uint8_t nSidechain))

Add new optional data to extended transactions

SCDB hashMerkleRoot commits & network updates

…tcoin#47)

* Update & cleanup RPC functions

* Refactor SidechainNumberValid -> IsSidechainNumberValid

* Remove old OP_BRIBE code

* Update BMM ratchet

* Update h* commit script flag
* Update ratchet structure
* Add GetBlocksAtop()
* Add some ratchet tests (WIP)

* Update CCoins, add CriticalData & SpendsBMMRequest() function

* Enforce maturity rules for critical data & bmm request txns

* Move some sidechain consts from sidechain.h to consensus.h

* changing valid sidechain array to a c++ std::array

* remove trailing commas

* fixed improper spacing

* Miner adds BMM hashMerkleRoot commitment to coinbase
* Add IsBMMHashMerkleRootCommit functions to CScript
* Add GetHash() function to SidechainLD
* Add GenerateBMMHashMerkleRootCommit()
* Update tests

Refactor coinbase commitments & update unit tests

Rebase pull request

Add new keypairs for each sidechain to ValidSidechains

updating nworkscore to 1 instead of 0

Tying sidechain keys to valid sidechain array

* Add files for sidechain withdrawal & escrow DB tables

* Add versionbits activation for Drivechains (BIPX & BIPY)

* Refactoring: Update IsBMMRequest() function, make it more useful and
clean up other parts of the codebase with it.

* Add base of sidechain tables (functional but ugly)

* Add some of the code to start enforcing versionbits activation of drivechains
(TODO: ensure full coverage)