log better messages
change Live cache SQL schema
avoid Virtuoso transaction deadlocks on CHECKPOINT
move feeder configuration to property file
Fix according to review: getMessage() may return null, use toString() instead
bugfix provided by @ninniuz
Merge pull request #142 from jimkont/live_features

Various enhancements for Live
Issue #149: Read stats generation property from JVM system property

- Decide whether to generate statistics by reading a JVM system property.
By doing that it is possible to create stats without having to edit the code
and recompile the framework.
- Add a Scala launcher in pom to start stats creation by setting the
appropriate JVM system property
Merge pull request #150 from ninniuz/149_stats_parameter

Issue #149: Read stats generation property from JVM system property
Missing italian string for HomepageExtractor.