Unit test fixes + initial CIYAM AT integration

NB: we're still using HSQLDB svn r5836

Updated README.md

Added log4j2.properties file for logging!

Imported CIYAM-AT jar into project-local Maven repo
CIYAM-AT related:
ATData
ATStateData
ATTransactionData
DeployATTransactionData
AT
DeployATTransaction
ATRepository
HSQLDBATRepository
HSQLDBDeployATTransactionRepository
ATTests
DeployATTransactionTransformer

Fixed Block so correct block hash and timestamps are generated,
especially when previous/next block versions differ.
Added extra call in BlockTransformer to aid this.

Fixed GenesisTransaction.isValid's incorrect amount test.

Fixed comments in TransferAssetTransaction and incorrect use of BlockChain.getVotingReleaseTimestamp()
instead of BlockChain.getAssetsReleaseTimestamp().

Added new TYPEs to HSQLDBDatabaseUpdates, and set LOB granularity to 1KB for AT use.
Added AT_address column to DeployATTransactions in HSQLDB.
Added ATs, ATStates and ATTransactions tables.
(You will need to discard existing database and rebuild).

Fixed incorrect byte array output in IssueAssetTransactionTransformer,
where Asset "references" were not processed correctly.

Added support for BigDecimal serialization to a byte-array size other than the standard 8.

log4j2.properties

@@ -0,0 +1,41 @@
+rootLogger.level = info
+# On Windows, this might be rewritten as:
+# property.filename = ${sys:user.home}\\AppData\\Roaming\\Qora\\log.txt
+property.filename = log.txt
+
+rootLogger.appenderRef.console.ref = stdout
+rootLogger.appenderRef.rolling.ref = FILE
+
+# Override HSQLDB logging level to "warn" as too much is logged at "info"
+logger.hsqldb.name = hsqldb.db
+logger.hsqldb.level = warn
+logger.hsqldb.appenderRef.rolling.ref = FILE
+
+# Override logging level for this class
+logger.voting.name = qora.transaction.VoteOnPollTransaction
+logger.voting.level = trace
+logger.voting.appenderRef.rolling.ref = FILE
+
+# Override logging level for this class
+logger.assets.name = qora.assets.Order
+logger.assets.level = trace
+logger.assets.appenderRef.rolling.ref = FILE
+
+appender.console.type = Console
+appender.console.name = stdout
+appender.console.layout.type = PatternLayout
+appender.console.layout.pattern = %d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
+appender.console.filter.threshold.type = ThresholdFilter
+appender.console.filter.threshold.level = error
+
+appender.rolling.type = RollingFile
+appender.rolling.name = FILE
+appender.rolling.layout.type = PatternLayout
+appender.rolling.layout.pattern = %d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
+appender.rolling.filePattern = ${filename}.%i
+appender.rolling.policy.type = SizeBasedTriggeringPolicy
+appender.rolling.policy.size = 4MB
+# Set the immediate flush to true (default)
+# appender.rolling.immediateFlush = true
+# Set the append to true (default), should not overwrite
+# appender.rolling.append=true