Adding LDAP support

app/templates/login.html

@@ -6,9 +6,15 @@
     <h1>{{ app_name }}</h1>
     <p class="muted">Sign in to continue</p>
     {% if error %}<div class="alert">{{ error }}</div>{% endif %}
+    {% if ldap_enabled %}
+    <label>Email or username
+      <input type="text" name="email" value="{{ email or '' }}" required autofocus>
+    </label>
+    {% else %}
     <label>Email
       <input type="email" name="email" value="{{ email or '' }}" required autofocus>
     </label>
+    {% endif %}
     <label>Password
       <input type="password" name="password" required>
     </label>