Merge branch 'stable-2.7' into stable-2.8

* stable-2.7:
  Bump JSch to 1.5.0 to fix Java7 compatibility
  Extend AddBranchResult with toString method implementation
  Get rid of JdbcSQLException while numbers are read from cache

Conflicts:
	gerrit-common/src/main/java/com/google/gerrit/common/data/AddBranchResult.java
	pom.xml

Change-Id: Ic3bae80a40bfa2d8e8eee598bcdbd771b99cbeda