[FIXED JENKINS-14538] Collapse nonempty tool installation sections by default in /configure.

changelog.html

@@ -55,6 +55,9 @@ Upcoming changes</a>
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+    Collapse nonempty tool installation sections by default in <code>/configure</code>.
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-14538">issue 14538</a>)
   <li class=bug>
     Custom workspace in matrix projects should be able to use axis as variables.
   <li class=bug>