generate active.properties file on data generation, minor refactorings
Merge branch 'master' of https://github.com/comsysto/jumbodb

* 'master' of https://github.com/comsysto/jumbodb: (34 commits)
  bundling with importer and upgrading gradle plugins
  long running caches
  boundary box bug fixed
  cache hint added
  index cache
  next try
  better logging
  compile fix
  deleted legacy file
  better and cleaner caching added
  cleanup
  encoding filter commented our
  rest with spring rest context
  some clean up
  next try
  some tracking for bug
  more logging
  another try
  check new implementation
  next try
  ...