From functions.php to plugin

Hello all,

I was trying to unclutter my functions.php a bit. I got some code extracted from the wonderful Shibshake blog, to change the input of a custom taxonomy. The code, pasted on my functions.php file works without problem. Code here: http://wordpress.pastebin.com/JHLGwscM

I’ve tried to moveall that into a plugin to unclutter my functions.php file. I’ve tried to do it with this code: http://wordpress.pastebin.com/CJjYYyEg

Althugh the plugin activates well… it doesn’t work as the taxonomy and input panel aren’t appearing… any idea what I did wrong in the process?

Thanks!