[imp] Don't use deprecated $app->getCfg in the frontend modules. Fixes #3554

Update mod_footer.php

Update helper.php

Update helper.php

Update mod_search.php

Update helper.php
[fix][#30845] Inconsistent element ID in JFormFieldUserGroup. Fixes #1994
[fix] Wrong class name in error message after error creating new folder. Fixes #1817
[fix] Implemented replacement of http protocol if current connection is https. Fixes #994
[imp] Changed conditional to make it easier to read.. Fixes #1839
[imp] Remove dependencies on document types. Fixes #488

Remove dependencies on document types in web.config
[imp] [3382] Use quote name in com_messages;
Closes #3720