Merge with commit eab948c7387dd08e53574dca41f59630b4c14c7c

InputScriptPubKeys from different transactions could mix and corrupt
validation context. PubKeys moved from list to dictionary of lists,
with transaction hash as key.

When node accepts transaction or receives block, it tries to load all
inputs to mempool. Trying to load zero-inputs to mempool leads to
corruption - valid transaction may be removed from mempool during
conflicts check. To prevent this, inputs selection algorithms modified
to ignore zero-inputs. Conflicts check ignores them too.

Splitting fee between miner and DeStream extracted to function.
In consensus, sum of fees of all transactions is split, not each fee.

Sending all fees to same address will make funds on that address
unspendable - it will never be enough confirmations on top of last
transactions. Taking random address from pool will prevent this issue.

Consensus checks that fee is charged from all spent funds (not change)
and is split between miner and DeStream

Input with pointer to change output conflicts with consensus rules as
there is no underlying transaction with funds for that input. Consensus
modified to ignore that input in funds checks.

- NBitcoin
	- move folder JsonConverters
	- remove Protobuf
	- move RPC
- NBitcoin.Tests
- Stratis.Bitcoin.Features.Notification
- Stratis.Bitcoin.Features.Notifications.Tests
- Stratis.Bitcoin.Features.Dns
- Stratis.Bitcoin.Features.Dns.Tests
- Stratis.Bitcoin.Features.BlockStore
	- added BlockStoreQueue.cs
	- remove BlockPair.cs
	- remove BlockStoreLoop.cs
	- remove BlockStoreLoopStep.cs
	- remove BlockStoreLoopStats.cs
	- remove \LoopSteps\BlockStoreInnerStepContext.cs
	- remove \LoopSteps\BlockStoreInnerStepFindBlocks.cs
	- remove \LoopSteps\BlockStoreInnerStepReadBlocks.cs
	- remove \LoopSteps\CheckNextChainedBlockExistStep.cs
	- remove \LoopSteps\DownloadBlockStep.cs
	- remove \LoopSteps\ProcessPendingStorageStep.cs
	- remove \LoopSteps\ReorganiseBlockRepositoryStep.cs
- Stratis.Bitcoin.Features.Consensus
	- added RuleContextOverrides.cs
	- added CoinviewRule.cs
	- added PosCoinviewRule.cs
	- added PowCoinviewRule.cs
	- remove Checkpoints.cs
	- remove ConsensusManager.cs
	- remove ConsensusPerformanceCounter.cs
	- remove ConsensusSettings.cs
	- remove ContextualInformation.cs
	- remove IPosConsensusValidator.cs
	- remove IPowConsensusValidator.cs
	- remove PosConsensusValidator.cs
	- remove IConsensusRules.cs
	- remove PowConsensusValidator.cs
- Stratis.Bitcoin.Features.Api
- Stratis.Bitcoin.Api.Tests
- Stratis.Bitcoin.Features.LightWallet
- Stratis.Bitcoin.Features.MemoryPool
- Stratis.Bitcoin.Features.Miner
- Stratis.Bitcoin.Features.RPC
- Stratis.Bitcoin.Features.Wallet
- Stratis.Bitcoin.Features.WatchOnlyWallet

- Stratis.Bitcoin
- Stratis.Bitcoin.Cli
- Stratis.BitcoinD
- Stratis.BreezeD
- Stratis.StratisD
- Stratis.StratisDnsD