Update: Add publish/unpublish button to admin trips table and improve table styling

src/processors/submit_pop.php

@@ -39,8 +39,8 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
     }
     
     $target_dir = $rootPath . "/uploads/pop/";
-    // Use EFT ID as filename instead of random filename
-    $filename = $eft_id . '.pdf';
+    // Use EFT ID as filename instead of random filename, replace spaces with underscores
+    $filename = str_replace(' ', '_', $eft_id) . '.pdf';
     $target_file = $target_dir . $filename;
     
     // Make sure target directory exists and writable