Add clean_file_name function to fix merge conflict

functions.php

@@ -405,6 +405,18 @@ function getDomainExpirationDate($name){
   return '0000-00-00';
 }
 
+function clean_file_name($string){
+  $string = strtolower($string);
+
+  // Gets rid of spaces
+  $clean_file_name = preg_replace('/\s/', '', $string);
+
+  // Gets rid of non-alphanumerics
+  $clean_file_name = preg_replace( '/[^A-Za-z0-9_]/', '', $string );
+
+  return $clean_file_name;
+}
+
 // Cross-Site Request Forgery check for sensitive functions
 // Validates the CSRF token provided matches the one in the users session
 function validateCSRFToken($token){