Add signin page.

frontend/src/app/pages/login/login.component.html

@@ -1,7 +1,7 @@
 <form [formGroup]="loginForm" (submit)="performLogin()" ngNativeValidate>
     <h1>Login</h1>
     <div>
-        <mat-icon>person</mat-icon>
+        <mat-icon>mail</mat-icon>
         <label for="email">
             Email address
             <span class="required">*</span>
@@ -18,6 +18,6 @@
     </div>
     <div class="actions">
         <button type="submit">Send</button>
-        <a [routerLink]="['/home']">Create an account</a>
+        <a [routerLink]="['/signin']">Create an account</a>
     </div>
 </form>