update year dropdown in html page

config.py

@@ -1,7 +0,0 @@
-db_config = {
-    'host': 'localhost',
-    'user': 'root',
-    'password': 'root',
-    'database': 'income_tax',
-    'port': 3306
-}

templates/upload.html

@@ -36,3 +36,7 @@
     </div>
 </div>
 {% endblock %}
+
+{% block extra_js %}
+<script src="{{ url_for('static', filename='js/year_dropdown.js') }}"></script>
+{% endblock %}