Sphinx

Few updates for Sphinx Search

First per #1489, the scheme is always utf-8 so that has been set.

Next, the commands used in the QL file were no longer compatible with the 2.0 Sphinx branch where some items have been depreciated and/or removed.  For example the pseudo columns @count is not returned when GROUP BY is used, and @id is now just id.  So this updates the ql interface to use the latest but those are not compatible with .9.9.x branchs. (the API version still does).

Last since weights are not used by Sphinx (at least the ones shown in the ACP) this will hide that interface with a message to avoid confusion.