too -> two

Thanks to mattsonlyattack!
Cloact -> Reagent
Rename the cloact directory as well
Start refactoring demo, to allow for multiple pages
Common code for demo in common.cljs
Simplify project.clj
Move intro into its own file
Rename demoutil
Add simple undo demo
Make todomvc look like it should
Move page generation to ClojureScript
Beep on generation error
Factor out link handling to common.cljs
Add menu row
Add permalink support
Simplify link handling
Move all page handling to page.cljs
Add some copy
Make components look nicer in React's Chrome plugin
Tweak demo and testing