Replace Python 3.10 `match` with if/else

Some distributions require manually installing Python 3.10, which makes
it less convenient than just using whatever version of Python3.X the
package manager supports. Since the only 3.10 feature being used was
"match", and it was a very small change, it's been replaced with an
if/else statement to ensure compatibility with older versions of Python
3.

app/routes.py

@@ -344,11 +344,9 @@ def search():
     # check for widgets and add if requested
     if search_util.widget != '':
         html_soup = bsoup(str(response), 'html.parser')
-        match search_util.widget:
-            case 'ip':
+        if search_util.widget == 'ip':
             response = add_ip_card(html_soup, get_client_ip(request))
-            case 'calculator':
-                if not 'nojs' in request.args:
+        elif search_util.widget == 'calculator' and not 'nojs' in request.args:
             response = add_calculator_card(html_soup)
 
     # Update tabs content