增加角色桌面地址配置参数，排序越靠前优先级越高。

modules/core/src/main/resources/views/modules/sys/sysIndex.html

@@ -19,7 +19,7 @@ var bodyClass = 'fixed noscroll2 sidebar-mini ' + sidebarCollapse;
 </div>
 <% } %>
 <div class="hide" id="desktopTabPage" data-title="${text('仪表盘')}"
-	data-url="${ctx}${@Global.getConfig('sys.index.desktopUrl')}"></div>
+	data-url="${ctx}${isNotBlank(desktopUrl!)?desktopUrl:@Global.getConfig('sys.index.desktopUrl')}"></div>
 <div class="hide" id="modifyPasswordTip" data-message="${modifyPasswordTip!}"></div>
 <script src="${ctxStatic}/jquery-toastr/2.1/toastr.min.js?${_version}"></script>
 <script src="${ctxStatic}/jquery-plugins/jquery.slimscroll.js"></script>