[ticket/12201] Separate pagination from table.

PHPBB3-12201
[ticket/12201] Center the file size and mark columns.

PHPBB3-12201
[ticket/12201] Rearrange pagination, sorting, and submit elements.

PHPBB3-12201
[ticket/12201] Only the top pagination should be floated to the right.

PHPBB3-12201
[ticket/12201] Display error and sorting options when there are no attachments

PHPBB3-12201
[ticket/12201] Fix typos in language pack.

PHPBB3-12201