Add a way to reset password (WIP)

backend/templates/ask_reset_password.html

@@ -0,0 +1,14 @@
+{% extends "base_with_header.html" %}
+
+{% block main_container %}
+    <div class="content">
+        <form action="/signup" method="post">
+            <label for="email_field">Your email address</label>
+            <input id="email_field" type="text" name="email" value="{{ email }}" autocapitalize="none" autocomplete="email" autofocus="autofocus" />
+            {{ message_email }}
+
+            <input type="submit" name="commit" value="Ask reset" />
+        </form>
+        {{ message }}
+    </div>
+{% endblock %}