Fix some issues on NBM: move css rules to mail body if it's possible.

Remove fieldset on available plugins page.

git-svn-id: http://piwigo.org/svn/trunk@5695 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/themes/default/default-layout.css

@@ -770,7 +770,7 @@ h2:lang(en) { text-transform:capitalize; }
 #helpContent LI, #ftpPage LI {margin-top:10px;}
 #helpContent P.nextStepLink {text-align:center; font-weight:bold; margin-bottom:20px;}
 
-#configContent FIELDSET {border:none;}
+#configContent FIELDSET, #availablePlugins FIELDSET  {border:none;}
 
 /**
  * Informations box in administration

admin/themes/default/template/plugins_new.tpl

@@ -30,6 +30,7 @@ jQuery().ready(function(){ldelim}
 </div>
 
 {if not empty($plugins)}
+<div id="availablePlugins">
 <fieldset>
 <legend></legend>
 {foreach from=$plugins item=plugin name=plugins_loop}
@@ -66,6 +67,7 @@ jQuery().ready(function(){ldelim}
 </div>
 {/foreach}
 </fieldset>
+</div>
 {else}
 <p>{'There is no other plugin available.'|@translate}</p>
 {/if}