change some Forums to Categories

[KeiKun]

Forum to Category

http://rathena.org/board/forum/116-server-resources-downloads/

http://rathena.org/board/forum/117-web-resources-downloads/

http://rathena.org/board/forum/122-client-resource-downloads/

Since their SubForums are just Discussion only ( Post Reply, No Topic Start )

[Brian]

Done.

[Keim]

Thanks for organizing. Makes it way easier to get to needed topics.