Added @FCKEDITOR variables

Those tests have a missing @FCKEDITOR variable which could lead to a missing detection of those vulnerable files.

The starting path is also written in lower-case "fckeditor" but i'm not sure if this path should be added to the db_variables:

https://github.com/sullo/nikto/blob/master/program/databases/db_variables#L30

Most of the other db_variables have also a starting path "/" added. Adding this could give also some more potential hits but probably is drastically increasing the running tests.