Add exam review functionality with navigation for questions

generic/templates/generic/exam_review_complete.html

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+{% extends 'generic/examcollection_base.html' %}
+
+{% block content %}
+<div class="container my-4">
+    <div class="alert alert-info">Review complete for exam: {{ exam.name }}</div>
+    <p><a class="btn btn-secondary" href="{% url app_name|add:':exam_overview' exam.pk %}">Back to exam overview</a></p>
+</div>
+{% endblock %}

generic/templates/generic/exam_review_question.html

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+{% extends 'generic/examcollection_base.html' %}
+
+{% block content %}
+<div class="container my-4">
+    <h2>Reviewing: {{ exam.name }} (Question {{ q_index|add:1 }} of {{ total }})</h2>
+
+    <div class="card mb-3">
+        <div class="card-body">
+            <h5 class="card-title">Question</h5>
+            <p class="lead">{{ question }}</p>
+
+            <p>
+                <a class="btn btn-sm btn-outline-secondary" href="{% url app_name|add:':question_detail' question.pk %}" target="_blank">View full question details</a>
+            </p>
+
+            <div class="d-flex justify-content-between mt-3">
+                {% if prev_index is not None %}
+                    <a class="btn btn-outline-primary" href="{% url app_name|add:':exam_review_question' exam.pk prev_index %}">&larr; Previous</a>
+                {% else %}
+                    <span></span>
+                {% endif %}
+
+                {% if next_index is not None %}
+                    <a class="btn btn-primary" href="{% url app_name|add:':exam_review_question' exam.pk next_index %}">Next &rarr;</a>
+                {% else %}
+                    <a class="btn btn-success" href="{% url app_name|add:':exam_overview' exam.pk %}">Complete review</a>
+                {% endif %}
+            </div>
+        </div>
+    </div>
+</div>
+{% endblock %}