Sort items by date modified.
Make the app cookie-based rather than having the same items for every
user.
https://github.com/cbrenton/node-todo/issues/2
Changed edit page to only show the selected item. Added an "edit all"
page to let you pick which items to edit.
Merge branch 'master' of github.com:cbrenton/node-todo

Conflicts:
	routes/index.js