Fix the avatar management code

hiboo/identity/templates/avatar_create.html

 {% extends "base.html" %}
 
+{% set service_name = service.name %}
 {% block title %}{% trans %}Sign-up{% endtrans %}{% endblock %}
 {% block subtitle %}{% trans service_name %}for the service {{ service_name }}{% endtrans %}{% endblock %}
 
 {% block content %}
-<div class="box">
-  <div class="box-body">
-    <p>{% trans %}Your are about to sign up for {{ service.name }}{% endtrans %}.</p>
-  </div>
-  {{ macros.form(form) }}
-</div>
+<p>{% trans service_name %}Your are about to sign up for {{ service_name }}{% endtrans %}.</p>
+{{ macros.form(form) }}
+
+{% call macros.help(_("The service that does not support profiles"), auto=utils.display_help("main")) %}
+<p>{% trans %}The service does not support profiles as alternate identities. You will thus simply need to signup.{% endtrans %}</p>
+<p>{% trans %}The service will be able to access your current Hiboo username.{% endtrans %}</p>
+<p>{% trans %}Depending on your settings, the service might also be able to send you notifications.
+  Hiboo will not directly communicate your email address or any notification destination to the service,
+  but opaque identifiers instead. Thus, you can set your notifications preferences at anytime
+  directly in Hiboo settings.{% endtrans %}
+</p>
+{% endcall %}
+
 {% endblock %}

hiboo/identity/templates/avatar_pick.html

 {% extends "base.html" %}
 
-{% block title %}{% trans %}Sign in{% endtrans %}{% endblock %}
+{% set service_name = service.name %}
+{% block title %}{% trans %}Sign-in{% endtrans %}{% endblock %}
 {% block subtitle %}{% trans service_name %}for the service {{ service_name }}{% endtrans %}{% endblock %}
 
 {% block content %}
-<div class="box">
-  <div class="box-body">
-    <p>{% trans %}Please confirm that you wish to sign in to {{ service.name }}.{% endtrans %}</p>
-  </div>
-  <form method="POST" action="{{ utils.url_or_intent("account.home") }}" class="form">
-      {{ form.hidden_tag() }}
-      <input type="hidden" name="identity_uuid" value="{{ avatar.uuid }}">
-      <input type="submit" value="Sign in" class="btn btn-lg btn-flat bg-gray text-black">
-  </form>
-</div>
+<p>{% trans service_name %}Your are about to sign in for {{ service_name }}{% endtrans %}.</p>
+<form method="POST" action="{{ utils.url_or_intent("account.home") }}" class="form">
+    {{ form.hidden_tag() }}
+    <input type="hidden" name="identity_uuid" value="{{ avatar.uuid }}">
+    <input type="submit" value="Sign in as {{ current_user.username }}" class="btn btn-lg btn-flat bg-gray text-black">
+</form>
 {% endblock %}