Changes to wiki and home.

Created the files to start building home static page.
Added a floating set of buttons on the left side of the screen of wiki. They are fixed so they move with you while you scroll. I have 3 buttons so far.
1. Overlay from codrops. Could use this for site navigation.
2. Sidebar from discover meteor. Could use this for wiki page navigation.
3. Playbook dropdown. This is also an overlay, but we originally intended it for navigation like the playbook uses it.