Add evaluation & small fixes for transaction logs

evaluation.ipynb

log/2017-07-19T09:49Z.json

log/2017-07-19T09:51Z.json

log/2017-07-19T10:20Z.json

log/2017-07-19T14:35Z.json

log/2017-07-19T14:52Z.json

log/2017-07-19T15:03Z.json

log/2017-07-19T15:12Z.json

src/main/java/fucoin/AbstractNode.java

src/main/java/fucoin/Snapshot.java

src/main/java/fucoin/actions/snap/SnapShotSaveState.java

...ain/java/fucoin/actions/snap/SnapShotSaveTransaction.java

...in/java/fucoin/configurations/GGBWalletConfiguration.java