Search module bug fix

[gugahoi]

Fix for bug where removing the first website from the search module would cause it to stop working. Now it defaults to the "oldest" (smallest id number).

Reason: It used to be that the search module by default tried to find the website with id = 1 however if a user deletes their first website the db would not shift the other ones back to 1 causing it to crash. Now it defaults to id closest to 1 (smallest out of all of them).

I also added a small log entry when failing to grab the newznab entry from the db.