add new demo symfony files

app/templates/user/change_password.html.twig

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+{% extends 'base.html.twig' %}
+
+{% block body_id 'user_password' %}
+
+{% block main %}
+    <h1>{{ 'title.change_password'|trans }}</h1>
+
+    <div class="alert alert-info" role="alert">{{ 'info.change_password'|trans }}</div>
+
+    {{ form_start(form) }}
+        {{ form_widget(form) }}
+
+        <button type="submit" class="btn btn-primary">
+            <i class="fa fa-save" aria-hidden="true"></i> {{ 'action.save'|trans }}
+        </button>
+    {{ form_end(form) }}
+{% endblock %}
+
+{% block sidebar %}
+    <div class="section">
+        <a href="{{ path('user_edit') }}" class="btn btn-lg btn-block btn-danger">
+            <i class="fa fa-edit" aria-hidden="true"></i> {{ 'action.edit_user'|trans }}
+        </a>
+    </div>
+
+    {{ parent() }}
+
+    {{ show_source_code(_self) }}
+{% endblock %}

app/templates/user/edit.html.twig

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+{% extends 'base.html.twig' %}
+
+{% block body_id 'user_edit' %}
+
+{% block main %}
+    <h1>{{ 'title.edit_user'|trans }}</h1>
+
+    {{ form_start(form) }}
+        {{ form_widget(form) }}
+
+        <button type="submit" class="btn btn-primary">
+            <i class="fa fa-save" aria-hidden="true"></i> {{ 'action.save'|trans }}
+        </button>
+    {{ form_end(form) }}
+{% endblock %}
+
+{% block sidebar %}
+    <div class="section">
+        <a href="{{ path('user_change_password') }}" class="btn btn-lg btn-block btn-danger">
+            <i class="fa fa-lock" aria-hidden="true"></i> {{ 'action.change_password'|trans }}
+        </a>
+    </div>
+
+    {{ parent() }}
+
+    {{ show_source_code(_self) }}
+{% endblock %}