Performance improvements for wallet qt client

Misbehaving masternodes banned quicker and for 48 hours by default
After block 1177777 about 23 days from time of posting; masternode traffic is reduced by 66%

Auto-checkpointing system modifications to prevent stuck chain errors

Minimum stake age increased to 10 hours

Development team preparations for future PEPE/MEME ver 3.0 upgrade


New logo pack available here
http://seed2.freepepe.org/misc/logofiles.zip