Start of Tutorial ResultSet feedback, Homepage update, new Registration and Sample NLP page

- Tutorial's feedback generation for result sets is underway. I'll
implement the last two variations soon. I'm pretty sure those will allow
us to ignore column order.
- JDBC_Abstract should now properly set the schema path... hopefully.
You may have to use "GRANT USAGE ON SCHEMA company TO readonly_user;",
etc.
- Updated homepage with a few tips.
- Registration page is now available.
- Reordered the menubar, hopefully its a bit cleaner now.
- Changed login from allowing registration, now links to the
registration page.
- Added sample NLP page