added site data variable and a layout file to make announcements work
WIP: July 24, night.
WIP2: Center the header.
Posts with images.
announcement and news side by side
made navigation menu
changed menu color to gtown blue
Bring back sidebar.
Change 'news' class to a more generic, 'content' class.
Better posts.

* Posts have a line above them (border).
No lines between posts in home page.
Better announcement text.
all nav links ready and top blue bar
Create dummy pages for newsletter, staff page, etc.
Fix 'More news ...' link.
Skip header image on navigation. Go to content directly.
Remove directly going to content.
about.md renamed to about.html
Remove slick directory. Move CSS and JS to proper place.
Remove and ignore .DS_Store (image thumbnails)