Fixed 'Register as a student' link problem for GHOP program.
Params and new_params in student view are also sub-merged now, so the apply pattern may be used by GHOP student view.
/**
* @param {Page[]} pages
* @param {number} [id] Specifies the id, if applicable.
* @param {String} [title = This is untitled.] Specifies the title.
*/
function Document(pages, id, title){
}