Allow detailed event listing with custom query to remote.php

Setting up page with com_bis list view that use custom query (e. g. when you want to display events only for some ZČ) does not allow for detailed view of single event, when you click on event's link. Now the bis_id param is attached to the custom query.
Merge pull request #1 from Ctibor/master

Allow detailed event listing with custom query to remote.php