Fixed the paging url path in paging controls

The paging url path should be constructed using the action_url that is passed by the controllers to the paging control.

https://bugzilla.redhat.com/show_bug.cgi?id=1171167
#1182
Can action_id be non-numeric?

Could we perhaps simplify body of this method to:

def update_paging_url_parms(action_url, parameter_to_update = {})
  url = update_query_string_params(parameter_to_update)
  action, an_id = action_url.split("/", 2)
  url[:action] = action
  url[:id]     = an_id unless an_id.nil?
  url_for(url)
end