luci-app-onliner: optimize translation

package/ctcgfw/luci-app-onliner/luasrc/view/onliner/onliner.htm

@@ -71,7 +71,7 @@ end
 
 					var td = tr.insertCell(-1);
 						td.colSpan = 4;
-						td.innerHTML = '<em><br /><%:What? There is no one online.%></em>';
+						td.innerHTML = '<em><br /><%:There is no one online now.%></em>';
 				}
 			}
 		}
@@ -81,7 +81,7 @@ end
 <h2 name="content"><%:Status%></h2>
 
 <fieldset class="cbi-section">
-	<legend><%:user online%></legend>
+	<legend><%:Online User%></legend>
 
 	<table class="cbi-section-table" id="online_status_table">
 		<tr class="cbi-section-table-titles">
@@ -96,4 +96,4 @@ end
 	</table>
 </fieldset>
 
-<%+footer%>
+<%+footer%>

package/ctcgfw/luci-app-onliner/po/zh-cn/onliner.po

@@ -9,3 +9,6 @@ msgstr "在线用户"
 
 msgid "Speed monitor"
 msgstr "宽带监视"
+
+msgid "There is no one online now."
+msgstr "当前无任何设备在线。"