[ALOY-718] ALLOY: SQL sync adapter should not require knowledge of the table name

The query that is passed to fetch() when using the sql sync adapter requires the table name to be specified. The example in Git https://github.com/appcelerator/alloy/blob/master/test/apps/models/sql_queries/controllers/main.js highlights the issue. So the collection is called color, but the table name is colors. It would be better if the table name could be replaced with a place holder in the string e.g. {tablename} or if the sql string does not start with SELECT then a SELECT * FROM is pre-pended. Alternatively, expose the tablename as a property of the Alloy Collection