Fix for Newznab providers when searching for a show without a tvrage id we use the name of the show. If the show name is more than one word we are using a `_` as our delimiter which works fine unless the NN provider uses sphinx.. as the underscore then is used as part of the show name.. thus we always get back no results. We should just use `.` as it works for both sphinx and non sphinx servers. Tested this out on nzbs.org / nzb.su (sphinx) / sbi (non sphinx).