Merge pull request #157 from mattiasw2/master

Replace EscapeParam by GetQuotedParam
Store JSV objects in VARCHAR(MAX) columns, same as VARCHAR(8000), but is stored as
blob if bigger than 8000 chars. So no problem storing huge dictionaries etc.
Very little performance penalty, see
http://www.simple-talk.com/sql/database-administration/whats-the-point-of-using-varchar%28n%29-anymore/