ModelTimeUpdates: fix broken anchors, convert leftover [[wiki|links]] syntax, repoint dead links
ModelTimeUpdates: repoint links to live pages
Updated ModelTimeUpdates (markdown)
Added table for the relationship of timesteps and dates
update old references to header files under include/
Enable syntax highlighting and remove excess indentation.
Changed most anchors to github-syntax
fixed relative code.google.com-style links by removing .md-extension
Migrating wiki contents from Google Code