增加修改个人信息和修改密码菜单。

static/css/adminstyle.css

@@ -33,6 +33,45 @@ body {
 .admin-header #username {
     margin-left: auto;
 }
+.user-menu-wrapper {
+    position: relative;
+    margin-left: auto;
+}
+.user-menu-wrapper #username {
+    margin-left: 0;
+}
+.user-menu {
+    position: absolute;
+    top: calc(100% + 4px);
+    right: 0;
+    z-index: 1100;
+    display: none;
+    min-width: 140px;
+    padding: 4px 0;
+    background: #fff;
+    border: 1px solid #e8e8e8;
+    border-radius: 4px;
+    box-shadow: 0 3px 12px rgba(0,0,0,0.16);
+}
+.user-menu-wrapper:hover .user-menu,
+.user-menu-wrapper:focus-within .user-menu {
+    display: block;
+}
+.user-menu button {
+    display: block;
+    width: 100%;
+    padding: 9px 14px;
+    border: 0;
+    background: transparent;
+    color: #333;
+    text-align: left;
+    cursor: pointer;
+    font-size: 13px;
+}
+.user-menu button:hover {
+    background: #f5f5f5;
+    color: #1890ff;
+}
 .admin-header span {
     background: transparent;
     padding: 5px 12px;