Use `window` from Endpoint enum for anon view (#748)

Removes previously hardcoded "/window" from anon view links

app/routes.py

@@ -520,7 +520,7 @@ def window():
 
     # Use anonymous view for all links on page
     for a in results.find_all('a', {'href': True}):
-        a['href'] = '/window?location=' + a['href'] + (
+        a['href'] = f'{Endpoint.window}?location=' + a['href'] + (
             '&nojs=1' if 'nojs' in request.args else '')
 
     # Remove all iframes -- these are commonly used inside of <noscript> tags