Blacklist mechanism

---------------------------------------------------------------------------------------
Reinstall this version even if your have already updated to 1.0.2 version early
---------------------------------------------------------------------------------------

Added address blocking mechanism that allows masternode to control blacklist of addresses.
If address added to blacklist, outgoing transactions from it will be discarded by all largocoin blockchain nodes.

Added two new console commands:

• getblacklist - returns actual blacklist
• blockaddress <address> - add address to black list. This command only available on masternode with blacklistmaster property enabled.

Only one masternode in blockchain can be blacklistmaster

UI updates

Added more cute icons to desktop wallets

First Largo Coin official release

First official Largo Coin release.