Automatic merge from branch-6.6

* origin/branch-6.6:
  Prepare for next development iteration
  SONAR-9721 Fix potential OkHttpClient connection leak
  Publish 6.6 Release Candidate 1
  fix quality flaws
  Propagate parameters of SQ analysis required by burgr
  fix unwanted text wrapping in the header in ie11
  SONAR-9908 on Windows, launch Elasticsearch directly, without batch files (#2642)
  SONAR-9694 Ignore when secondary locations are out of current file for backdating
  Fix sidebar position helper in IE

diff --cc server/sonar-main/src/main/java/org/sonar/application/SchedulerImpl.java
Simple merge

diff --cc server/sonar-main/src/main/java/org/sonar/application/process/ProcessLauncherImpl.java
Simple merge

diff --cc travis.sh
Simple merge