From XLSies to PLies

Basically, I just took style sheet from XLSies and made everything else based on SlideMaker.

In the process, I rewrote most of SlideMaker perl code and added error checking.

Additional benefits:

• split TOC page to multiple parts of 10 entries
• add better support for <blockquote> and <strong> from Mozilla composer
• add nesting of TOC if slide titles are the same (use sub-title)
• added progress bar for number of slides
• separation of perl code from design (using templates)