Update accessibility_report_drop_tables.sql
Update accessibility_report_create_tables.sql

Set primary key as SERIAL to allow auto incrementing
Update category.rb
Update page.rb
Update report.rb
Update description.rb

Self inheritance turned off so that we can have a column called 'type'
Update dataBaseAccess_test_harness.rb
Update databaseAcess.rb

Added insert statements for remaining tables
Merge pull request #2 from anormand/master

SQL scripts and test harness updated