- Visit <yoursite>/admin/tool/langimport/index.php
- Install multiple language packs.
- Under the 'Installed language packs' notice how you can only select one of these but the submit button reads 'Uninstall select language pack(s)'.
1) Allow for multiple deletions of language packs.
2) Remove '(s)' from the string.
Personally I am in favour of 1.