Added default language pack (en-gb)

admin/tool/backup.php

@@ -0,0 +1,19 @@
+<?php
+// Heading
+$_['heading_title']    = 'Backup &amp; Restore';
+
+// Text
+$_['text_success']     = 'Success: You have successfully imported your database!';
+
+// Entry
+$_['entry_progress']   = 'Progress';
+$_['entry_export']     = 'Export';
+
+// Tab
+$_['tab_backup']       = 'Backup';
+$_['tab_restore']      = 'Restore';
+
+// Error
+$_['error_permission'] = 'Warning: You do not have permission to modify Backup &amp; Restore!';
+$_['error_export']     = 'Warning: You must select at least one table to export!';
+$_['error_file']       = 'File could not be found!';