Added admin link to Label Management view

Author: bodom0015

app/views/main.scala.html

@@ -234,6 +234,7 @@
                                         <li><a href="@routes.Admin.listRoles">List Roles</a></li>
                                         <li><a href="@routes.Admin.createRole">Add Role</a></li>
                                         <li><a href="@routes.Extractors.selectExtractors">Extractors</a></li>
+                                        <li><a href="@routes.Extractors.manageLabels">Extractor Labels</a></li>
                                         <li><a href="@routes.Extractors.listAllExtractions">Extractions Log</a></li>
                                         <li><a href="@routes.Previewers.list">Previewers</a></li>
                                         <li><a href="@routes.Admin.adminIndex">Indexes</a></li>