Fixed dark mode footer text color

Updated to use config accessor rather than boolean value

app/templates/index.html

@@ -105,7 +105,7 @@
             </div>
         </div>
         <footer>
-            <p style="color: {{ '#fff' if dark_mode else '#000' }};">
+            <p style="color: {{ '#fff' if config.dark else '#000' }};">
                 Whoogle Search v{{ version_number }} ||
                 <a style="color: #685e79" href="https://github.com/benbusby/whoogle-search">View on GitHub</a>
             </p>