Add back button

Author: Kristan Kenney

web/templates/admin/list_auth.html

@@ -1,6 +1,7 @@
 <div class="l-center">
       <div class="l-sort clearfix noselect">
         <div class="l-unit-toolbar__buttonstrip">
+          <a href="javascript:window.history.back()" id="btn-back" class="ui-button cancel"><i class="fas fa-arrow-left status-icon blue"></i> <?=_('Back')?></a>
           <a href="javascript:location.reload();" class="ui-button cancel"><i class="fas fa-redo status-icon green"></i> <?=_('Refresh')?></a>
           <div class="actions-panel display-inline-block" key-action="js">
             <a class="data-controls do_delete ui-button danger cancel">