update menu icon

src/main/resources/fess_label.properties

@@ -171,7 +171,7 @@ labels.menu_system=System
 labels.menu_wizard=Wizard
 labels.menu_crawl_config=General
 labels.menu_scheduled_job_config=Scheduler
-labels.menu_system_config=System
+labels.menu_system_config=Dashboard
 labels.menu_document_config=Index
 labels.menu_design=Page Design
 labels.menu_dict=Dictionary

src/main/webapp/WEB-INF/view/common/admin/sidebar.jsp

@@ -47,7 +47,7 @@
 
 					<li <c:if test="${param.menuType=='system'}">class="active"</c:if>><la:link
 							href="/admin/system/">
-							<i class="fa fa-circle-o text-aqua"></i>
+							<i class="fa fa-dashboard text-aqua"></i>
 							<span><la:message key="labels.menu_system_config" /></span>
 						</la:link></li>