Event logging: small enhancements + runtime docs fix (removing business key explanation)
Merge branch 'master' of https://github.com/Activiti/Activiti

# By Tijs Rademakers (3) and others
# Via Tijs Rademakers
* 'master' of https://github.com/Activiti/Activiti:
  Small test changes
  removed java.util.logging
  Replacement of pull request 295
  Allow to set catalog on DbSqlSessionFactory and on ProcessEngineConfiguration
  test case to show that act-1992 works fine