#14 paging for long help files

[Lee Harr]

Originally reported on Google Code with ID 27 ```

Example:

o The Pixie Queen and the Imp Lord absolutely hate each other. Bring the Pixie Queen imp corpses and GIVE IMP TO QUEEN for Type MORE to continue reading. (27% shown)

NOTE: Users must be able to type in other commands and even change rooms without affecting this functionality.

```

Reported by hello.jay.araujo on 2009-01-29 00:15:04