fix(orm): correct return of simpleQuery if no results (refs #4360)

return array() if no results unless if singleresult and singlecolumn are true
in this case return false
test(orm): test simpleQuery results when no results (refs #4360)

change singlecolumn, singleresults parameters
Merge pull request #1042 from Eric-Brison/3.2-I4360

fix(orm): correct return of simpleQuery if no results (closes #4360)