Move remaining files to use new code

Include and Exclude list updated to use the calculated path to their respective x_species_list.txt files

Move play.php over to also use the new calculated paths to disk_check_exclude

Spectrogram.php remove unused code & replace setting save code with new function

Stats.php removed old code, update paths to use calculated path.

Rename setSetting func to saveSetting
Remove old code from other pages

scripts/birdnetpi_request.php

@@ -1,10 +1,10 @@
 <?php
-if (file_exists('thisrun.txt')) {
-  $config = parse_ini_file('thisrun.txt');
-} elseif (file_exists('firstrun.ini')) {
-  $config = parse_ini_file('firstrun.ini');
-} 
-$template = file_get_contents("./scripts/email_template2");
+if(file_exists('./scripts/common.php')){
+    include_once "./scripts/common.php";
+}else{
+    include_once "./common.php";
+}
+$template = file_get_contents(getFilePath('email_template2'));
 
 foreach($config as $key => $value)
 {