Data Displayer: Display MySQL query result data in various formats

This class is meant to display arbitrary data or data from database query result in various formats such as reports, grids and catalogs.

It is suitable for generating catalog products (shopping chart).

It features:

- Pagination of long listings of data
- Convert URLs into HTML links
- Convert image strings to HTML image tags
- Add other types of page elements such as forms, links, Javascript, etc.
- Associate user defined functions to specific field
- Set the CSS style and class to tables and fields
- Etc.