Allow to disable SQLite double-quoted string acceptance

[ysalmon]

As per the documentation, newer versions of SQLite can be set to get rid of the old behaviour of accepting double-quoted literals as strings.

This needs to be either set up at compile time or upon the connection.

It seems SQLiteStudio currently has no way of activating this feature, and I think the user cannot to do it (there is no corresponding PRAGMA, for instance).

Maybe this should be an option ?