Dynamic Browser Tab Title Handling Based on File Context (#1202)

* Update tinyfilemanager.php

Now it will show the filename as browser tab title so that user can easily identify which file is opened on which tab.

* Update tinyfilemanager.php

remove lines 3722 and 3734 and add this directly in  3733 as per the suggestion of @ner00

* Update tinyfilemanager.php

extra trailing space removed

tinyfilemanager.php

@@ -3817,7 +3817,7 @@ function fm_show_header()
     <meta name="robots" content="noindex, nofollow">
     <meta name="googlebot" content="noindex">
     <?php if($favicon_path) { echo '<link rel="icon" href="'.fm_enc($favicon_path).'" type="image/png">'; } ?>
-    <title><?php echo fm_enc(APP_TITLE) ?></title>
+    <title><?php echo isset($_GET['edit']) ? $_GET['edit'] : fm_enc(APP_TITLE); ?></title>
     <?php print_external('pre-jsdelivr'); ?>
     <?php print_external('pre-cloudflare'); ?>
     <?php print_external('css-bootstrap'); ?>