Unified logging (no more chaos on stdout)

src/main/java/fucoin/AbstractNode.java

src/main/java/fucoin/Main.java

src/main/java/fucoin/actions/Action.java

src/main/java/fucoin/actions/join/ActionJoinAnswer.java

...va/fucoin/actions/search/ActionSearchWalletReference.java

...transaction/ActionCommitDistributedCommittedTransfer.java

...transaction/ActionInvokeDistributedCommittedTransfer.java

...ava/fucoin/actions/transaction/ActionInvokeSentMoney.java

...tion/ActionPrepareDistributedCommittedTransferAnswer.java

src/main/java/fucoin/gui/SuperVisorGuiControl.java

src/main/java/fucoin/gui/SuperVisorGuiControlImpl.java

src/main/java/fucoin/supervisor/SuperVisorImpl.java