Merge branch 'stable-2.10'

* stable-2.10:
  Remove now unused project parameter
  Detecting Trivial Rebases fails unnecessarily early
  Show link on hover for headings and anchors in documentation
  Release notes for Gerrit 2.9.3
  Set version to 2.9.3
  Don't duplicate commandName in SSH log
  Update sha1 for sshd-core 0.9.0-4-g5967cfd
  Set version to 2.10-SNAPSHOT
  Update version to 2.10-rc1
  Revert "SSHD: Prevent double authentication for the same public key"
  Disable Git over http when Gerrit is not configured to support http
  Update 2.10 release notes
  Downgrade SSHD to 0.9.0-4-g5967cfd

Conflicts:
	gerrit-server/src/main/java/com/google/gerrit/server/contact/EncryptedContactStore.java
	gerrit-sshd/src/main/java/com/google/gerrit/sshd/SshDaemon.java

Change-Id: If8f7ec295a17a38789959743d094407b8e46a60d