adding deletion to practices pages

web/app/templates/edit.html

             onclick="return confirm('Are you sure you want to delete this tool?')">
 </form>
 {% endif %}
+{% if resource['type'] == 'practice' %}
+<form action="{{ url_for('practice.delete_practice', practice_id=resource['id']) }}" method="POST">
+    <input type="submit" value="Delete"
+            class="btn btn-danger btn-sm"
+            onclick="return confirm('Are you sure you want to delete this practice?')">
+</form>
+{% endif %}
 {% endblock %}