Automatic merge from branch-5.2

Automatic merge from branch-5.2

* origin/branch-5.2:
  fix reset of TreeRootHolderRule + reduce duplication
  reduce polling time of Compute Engine scheduler from 10s to 2
  add name to thread used by NotificationService
  fix duplicated SqlSessionFactory in memory
  minor fix in MutableAnalysisMetadataHolder#setAnalysisDate javadoc
  do not reload profile details when selecting a project, fix tooltips
  improve readability of language selection on the profiles page
  fix capitalization inconsistency of the notification dispatcher names
  fix error in JsonWriter usage description in javadoc of WebService