Fix Project information when issue tracking url and scm url are blank

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@114692 13f79535-47bb-0310-9956-ffa450edef68

xdoc/src/plugin-resources/templates/project-info.xml

@@ -45,7 +45,7 @@
           
           -->
           
-          #if ($project.repository.url)
+          #if ($project.repository.url && $project.repository.url != '')
           <tr><td><a href="cvs-usage.html">Source Repository</a></td>
             <td>
               This is a link to the online source repository that can be
@@ -53,7 +53,7 @@
             </td>
           </tr>
           #end
-          #if ($project.issueTrackingUrl)
+          #if ($project.issueTrackingUrl && $project.issueTrackingUrl != '')
           <tr><td><a href="issue-tracking.html">Issue Tracking</a></td>
             <td>
               This is a link to the issue tracking system for this