-Use version PGSS_TUP_V1_2
-total time being zero
-Remove session_start from the view and use point release number to generate queryid
- Hide only queryid and query text and not all fields from unauthorized user
-Removed introduced field as it has no usecases
-Documentation and code cleanup and formatting

-changed min value of pg_statement.max to 100, changed position of query_id in view, removed unnecessary refactoring