Improvements & fixes for scripts:
* -w or --wait for waiting until master/slave finishes (returns it exit code)
* -o or --out-file for specifying where to redirect stdout/stderr
* -J for adding JVM options
Included throughput chart in html report, conditional generation of charts for different cluster sizes
Fixed typo
Bugfix: inverted comparison
Fixed the check on ManyIntegersObjectGenerator
Fixed generator for words longer than total size
* configs set to empty maps instead of null
* HTML reporter handling null configs (for double check)
More verbose error handling for slave index
Reflection-based toString for DistStageAck
Fixed link to timelines
One more script fix