Wicket: implement "Test type 5: Database updates"
PR #656 - Use batching for the updates
Merge branch 'master' into wicket-5-database-updates
Merge branch 'wicket-5-database-updates' of https://github.com/martin-g/FrameworkBenchmarks into PR656

Conflicts:
	wicket/benchmark_config
	wicket/source_code
	wicket/src/main/java/hellowicket/WicketApplication.java