Update Keywords test to reflect high amount of keyword usage
Use the ANSI SQL 2008 reserved words list in SQLTemplates

The list, taken from
https://github.com/jgornick/reservedwordsearch/blob/master/words/ansi-sql2008.json
list a total of 327 words.
Use the PostgreSQL 9.3 reserved word list in PostgresTemplates

The list, taken from
http://www.postgresql.org/docs/9.3/static/sql-keywords-appendix.html
list a total of 100 reserved words