User Guide - generating query results

Added class reference subsection to the "Generating query results" page in the Database Reference section of the User Guide.
Signed-off-by:James L Parry <jim_parry@bcit.ca>
User Guide - generating query results

Added attributes to the class reference.
Signed-off-by:James L Parry <jim_parry@bcit.ca>
User Guide - query results

Removed attributes from class reference.
Added square brackets for optional parameters.
Signed-off-by:James L Parry <jim_parry@bcit.ca>
Merge pull request #3395 from jim-parry/userguide/results

User Guide - generating query results