* Add last ping time to masternode_info_t

* Use thread safe functions to access mnodeman in masternodelist.cpp

* Fix masternodelist widget locking

* Protect access to widget data from StartAlias button

Setup the number of p2p message processing threads in init.cpp

bf74c6f [Cleanup] Remove stale UNITTEST network (Fuzzbawls)

Pull request description:

  This network is un-necessary as our unit test suite can simply be run
  with MainNet's parameters, which is basically what we already do.

  Minor conflict with bitcoin#1328 due to that PR having already removed one of the unused methods.

ACKs for top commit:
  random-zebra:
    utACK bf74c6f
  furszy:
    utACK bf74c6f and merging..

Tree-SHA512: 1b8c7b4178e2dc8d60fe89b4ce4d4ad476f433ced19d981e1d3e1043fd8468e269600fcbe30ee04f7954250a183f2bc34486ad9b37fd7d78aed828c47d662d77

23c9b6c Swap to newer method for genesis calculation; introduce Consensus namespace.. (barrystyle)

Pull request description:

  This is PR is the forth part of breaking up bitcoin#1209 into individual narrow-focused PRs. Original commit(s) were cherry-picked from @barrystyle's initial pre-squashed branch and then re-squashed (reference branch is at https://github.com/Fuzzbawls/PIVX/commits/pr-1209)

  Input Commits:
  Fuzzbawls@041c9ee
  Fuzzbawls@5d7e61c
  Fuzzbawls@cf696e4
  Fuzzbawls@18ab8ef
  Fuzzbawls@0a8338b

  Note: I didn't retain any transitional or "fixup" commits, so this PR is a single commit which takes the overall changeset of the above commits, along with some cleanup of unused/unneeded code that was in the original overall changeset (not-implemented BIP9 chain parameters, for example).

  -------------------

  This PR does two things:
  2. Establishes the `Consensus` namespace skeleton, with a minimum number of chain parameters moved into the new namespace. Additional PRs should be opened after this is merged that handle the moving of other consensus-specific chain parameters in a concise and narrow-focused manner.
  2. Refactors the method for initializing the genesis block on each chain (Mainnet, Testnet, Regtest) to be a function call rather than an in-class manual crafting of the block.

ACKs for top commit:
  random-zebra:
    ACK 23c9b6c
  furszy:
    ACK 23c9b6c

Tree-SHA512: dae6e1d887ade18855c9f1d16f625ec6d6e1cab890fe50eb045835798bab5df55475cdb6ec2e41326e48c568649b13f5e13adc49d21cba097feda2193fd28970

64465b7 [Refactor] Consensus: Stake Modifier V2 (random-zebra)
8083725 [Refactor] Consensus: TimeProtocolV2 parameters (random-zebra)
4d1c696 [Refactor] Consensus: nStakeMinAge, nStakeMinDepth, nFutureTimeDrift (random-zebra)
e69cee2 [Refactor] Consensus: restore nMaxMoneyOut as consensus param (random-zebra)
08a581d [Refactor] Consensus: fAllowMinDifficultyBlocks, fPowNoRetargeting (random-zebra)
ca6ea3c [Refactor] Consensus: nTargetTimespan, nTargetSpacing, nTimeSlotLength (random-zebra)
a281dee [Refactor] Consensus: remove unneeded getters. Rename BIP65Height (random-zebra)
284271c [Refactor] Consensus: bnProofOfWorkLimit / bnProofOfStakeLimit (v1-v2) (random-zebra)

Pull request description:

  This PR builds on
  - [x] bitcoin#1328

  Populates the `consensus` struct with all relevant consensus parameters.
  Resets `nMaxMoneyOut` as chain param (with different value for TestNet).
  Cleans up several unneeded fields in ChainParams.

  EDIT: Current PR has been split in two. Second part is bitcoin#1344

ACKs for top commit:
  furszy:
    good, utACK 64465b7.
  Fuzzbawls:
    utACK 64465b7

Tree-SHA512: d3e46bc8bb2ad9ee48abcbc4d4b1df2f59914360aaca72e93e19a5578248ecb95fd6a422477238e4736bc767d4e226f5b7f867174d96dcace73621946bf84df8