Convert english translation file

- convert english translation to translate key
- remove baggy template for login (never used since user isn't logged in and it'll use the default theme: material)
- fix tests about text in response (now checking translation key instead of translated text)
- remove all ugly `<div class="hidden">{{ form_rest(form) }}</div>`

src/Wallabag/UserBundle/Resources/views/Security/login.html.twig

@@ -0,0 +1,46 @@
+{% extends "FOSUserBundle::layout.html.twig" %}
+
+{% block fos_user_content %}
+<form action="{{ path('fos_user_security_check') }}" method="post" name="loginform">
+    <div class="card-content">
+
+        {% if error %}
+            <span class="black-text">{{ error.message }}</span>
+        {% endif %}
+
+        {% for flashMessage in app.session.flashbag.get('notice') %}
+            <span class="black-text"><p>{{ flashMessage }}</p></span>
+        {% endfor %}
+
+        <div class="row">
+
+            <div class="input-field col s12">
+                <label for="username">{{ 'security.login.username'|trans }}</label>
+                <input type="text" id="username" name="_username" value="{{ last_username }}" />
+            </div>
+
+            <div class="input-field col s12">
+                <label for="password">{{ 'security.login.password'|trans }}</label>
+                <input type="password" id="password" name="_password" />
+            </div>
+
+            <div class="input-field col s12">
+                <input type="checkbox" id="remember_me" name="_remember_me" checked />
+                <label for="remember_me">{{ 'security.login.keep_logged_in'|trans }}</label>
+            </div>
+
+        </div>
+    </div>
+    <div class="card-action center">
+        <input type="hidden" name="_csrf_token" value="{{ csrf_token('authenticate') }}" />
+        <a href="{{ path('fos_user_registration_register') }}" class="waves-effect waves-light grey btn"><i class="material-icons left"></i> {{ 'security.login.register'|trans }}</a>
+        <button class="btn waves-effect waves-light" type="submit" name="send">
+            {{ 'security.login.submit'|trans }}
+            <i class="mdi-content-send right"></i>
+        </button>
+    </div>
+    <div class="center">
+        <a href="{{ path('fos_user_resetting_request') }}">{{ 'security.login.forgot_password'|trans }}</a>
+    </div>
+</form>
+{% endblock fos_user_content %}