Force pipeline graph summary below build timing information (jenkinsci#811)

* Force pipeline graph summary below build timing information

* Use 'class=clearfix' class instead of 'style=

Co-authored-by: Tim Jacomb <21194782+timja@users.noreply.github.com>

* Use 'class=clearfix' in a separate div before the div holding the graph

* Fix up whitespace

---------

Co-authored-by: Tim Jacomb <21194782+timja@users.noreply.github.com>

Author: stuartrowe

src/main/resources/io/jenkins/plugins/pipelinegraphview/consoleview/PipelineConsoleViewAction/summary.jelly

@@ -2,6 +2,8 @@
 <?jelly escape-by-default='true'?>
 <j:jelly xmlns:j="jelly:core">
   <j:if test="${it.showGraphOnBuildPage}">
+    <!-- workaround floatingBox elements overlapping -->
+    <div class="clearfix" />
     <div id="graph"
          data-current-run-path="${rootURL + '/' + it.buildUrl}"
          data-previous-run-path="${it.previousBuildUrl != null ? rootURL + '/' + it.previousBuildUrl : null}" />