add navbar icon

app/mycard.component.css

@@ -71,6 +71,11 @@ lobby[hidden], webview[hidden] {
     text-align: center;
 }
 
+#navbar-brand img {
+    width: 24px;
+    margin-top: -5px;
+}
+
 #navbar .nav-link {
     font-size: 18px;
     color: #a7a7a7;

app/mycard.component.html

 <nav id="navbar" class="navbar navbar-toggleable-md navbar-light">
-    <a id="navbar-brand" class="navbar-brand" href="#">MyCard</a>
+    <a id="navbar-brand" class="navbar-brand" href="#">
+        <img src="images/icon.ico" /> MyCard
+    </a>
     <ul class="navbar-nav mr-auto">
         <li *ngIf="!loginService.logged_in" class="nav-item active">
             <a i18n class="nav-link" href="#">登录</a>