view public/javascripts/repository.js @ 1087:74407a04925c issue_540

* (publication.rb) - fixed the acts_as_activity query (see diff to previous commit) - not returning duplicate results any longer; added the visible scope to the publication model;
* (init.rb) - created a new public permission - view_publication.

function toggle_ext_url(){
	if($('repository_is_external').checked)
	    $('repository_external_url').enable();
	else
	    $('repository_external_url').disable();
}