Refactor exam_groups_edit.html to use crispy forms for improved form rendering and styling

generic/templates/generic/exam_groups_edit.html

@@ -1,4 +1,5 @@
 {% extends exam.get_app_name|add:'/exams.html' %}
+{% load crispy_forms_tags %}
 
 {% block content %}
     <h1>Exam: {{exam}}</h1>
@@ -12,10 +13,8 @@
 
     <form action="" method="post">
         {% csrf_token %}
-        <table>
-            {{ form }}
-        </table>
-        <input type="submit" value="Submit">
+        {{ form|crispy }}
+        <button type="submit" class="btn btn-primary">Submit</button>
     </form>
 
 {% endblock content %}