Peers blacklisting

[oskin1]

Close #177

This PR implements the following blacklisting algorithm: Penalties are divided into 4 categories:

1. NonDeliveryPenalty - applied when a peer did not deliver requested modifier in time
2. MisbehaviorPenalty - applied when some modifier delivered by peer appeared to be invalid
3. SpamPenalty - applied when a peer delivered non-requested modifier
4. PermanentPenalty - applied to peers conforming to a different protocol (failed to parse message from a peer)

• Once some penalty is applied a penalized peer accumulates penaltyScore (varies depending on penalty type: NonDeliveryPenalty - 2; MisbehaviorPenalty - 10; SpamPenalty - 25; PermanentPenalty - ∞; )
• Penalties of type 1, 2, 3 are not applied repeatedly within a safe interval (defined by scorex.network.penaltySafeInterval - default: 5m)
• Once some peer accumulates critical penalty score (defined by scorex.network.penaltyScoreThreshold - default: 100) it gets banned for some time (defined by scorex.network.temporalBanDuration - default: 60m)
• The PermanentPenalty is applied immediately and leads to a permanent ban of a peer

[coveralls]

Coverage remained the same at 47.185% when pulling f14d7a1c8bd1b8428ed756b1d1a46ca0dc74d79e on i177_2 into 61389071995059b5fe4fc04d6cf1d04a355d5b81 on master.

[kushti]

@oskin1 accepted, but please get tryWithLogging back