clean-up
move rogerignazio.com to jekyll

This should be everything that is needed to start hosting
rogerignazio.com using Jekyll on GitHub Pages. The site is already
hosted there, but up to this point has been static HTML. This should
make it much easier to maintain.

Since this is such a large commit, here's a breakdown of changes:
- Start using Jekyll
- Created layouts and includes
- Modified existing pages to use new layouts
- Cleaned-up a lot of the pre-existing HTML and CSS
- In some cases, switched pages to use Markdown for ease of maint.
- Re-worked some image display on pages, removed old files as needed
pull-in syntax.css per jekyll docs

Per the Jekyll docs, pulled in syntax.css from
https://github.com/mojombo/tpw/blob/master/css/syntax.css