1505 question search

So it turns out _name is deprecated. It holds the english translation of the question but that's not such a good idea because then search won't work for e.g. French questions.
The problem is, and this is a limitation of storing translations serialized, it's not straightforward to search. I think I know a way to do it with RLIKE. I have already done some experimentations and I know the search code best so let me build this capability into the search code tomorrow and I will fix this bit.