**Author:** `michael`

**Description:**

Just like in a book index, category listings should sort numbers by their value, not just as dumb strings of characters.

Example: http://en.wikipedia.org/wiki/Category:Antonov, partial listing:

...

Antonov An-2

Antonov An-218

Antonov An-22

Antonov An-225

Antonov An-24

Antonov An-26

Antonov An-28

Antonov An-3

...

Of course, it should be

...

Antonov An-2

Antonov An-3

Antonov An-22

Antonov An-24

Antonov An-26

Antonov An-28

Antonov An-218

Antonov An-225

...