Access control for file serving

Authenticated user only for now

lang/en/lang.php

@@ -25,6 +25,8 @@ $lang['saved'] = 'Settings saved.';
 $lang['err_save'] = 'Could not save settings. Please check write permissions for conf/local.php.';
 $lang['err_security'] = 'Security token mismatch. Please retry.';
 
+$lang['access_allow'] = 'Allowed users/groups for file access (one per line or comma-separated). Use @group for groups. Leave empty to allow any logged-in user.';
+
 $lang['paths'] = 'Allowed base paths (one per line). Optional: follow a path with A> alias and W> web URL.';
 $lang['scratchpad_paths'] = 'Scratchpad files (one per line). Each file path must include the extension. Use a following A> line to set the pad name used in the wiki.';
 $lang['allow_in_comments'] = 'Whether to allow luxtools syntax (files/images/directory/scratchpad) to be used in comments.';