Re: how to ask a gsp from a plugin to import js stuff in my own app?

see http://grails.org/doc/1.0.x/ref/Tags/createLinkTo.html

and try playing with "absolute" attribute:

absolute (optional) - If set to "true" will prefix the link target address with the value of the grails.serverURL property from Config, or http://localhost:<port> if no value in Config and not running in production.