halfway through refactor
Fixed lots of bugs while doing the major refactoring.
Now, all the assumptions about what a nanoc item is are in one place and the rest of the code relies on the CItem class to know what the properties are. All the tests run. Phew.
a couple of test fixes
small syntax errors
add content/content to .gitignore
remove rakefile mention of mydev
small bug fixes
add a couple of navigation helpers
added ruby content helper
bundle update
lecture number support
implement lecture date logic