M2 -> M3

Review URL: https://chromiumcodereview.appspot.com/12324024
M3 spec

Staged at:
http://spec.dart-lang.appspot.com/docs/spec/

Review URL: https://chromiumcodereview.appspot.com/12317031
Seth's latest changes: https://chromiumcodereview.appspot.com/12300029

Also:
- add id's to avoid future generation diffs
- update list of updates

Review URL: https://chromiumcodereview.appspot.com/12327020
Book pages now highlighted.
Remove obsolete line in HTML version of spec.

Review URL: https://chromiumcodereview.appspot.com/12314021
Merge pull request #36 from timothyarmstrong/book-prettyprint

Syntax Highlighting for the Book
fixed typos for bug reports 8584, 8585, 8611, 8697, 8718.

BUG=

Review URL: https://chromiumcodereview.appspot.com/12340056
more updates for m3

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Review URL: https://chromiumcodereview.appspot.com//12320061
add dart crash course

BUG=

Review URL: https://chromiumcodereview.appspot.com//12330123
add ep 8 from dart tips

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Review URL: https://chromiumcodereview.appspot.com//12317111
stuff

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Review URL: https://chromiumcodereview.appspot.com//12335140
IO article updated

BUG=

Review URL: https://chromiumcodereview.appspot.com//12385022
fix timer library

IO article updated

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Review URL: https://chromiumcodereview.appspot.com//12380030
fix timer again

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Review URL: https://chromiumcodereview.appspot.com//12389027
fix link

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Review URL: https://chromiumcodereview.appspot.com//12383028
Latest book changes.

Staged at:

http://m3-2.dart-lang.appspot.com/docs/dart-up-and-running/

This are the changes from https://chromiumcodereview.appspot.com/12335083/, in the HTML flesh.

Review URL: https://chromiumcodereview.appspot.com/12335115
Latest version of book

Review URL: https://chromiumcodereview.appspot.com/12383072
unittest package ref fixes
Merge pull request #38 from kevmoo/master

fixed package ref to unittest

Thanks!
update script to m3-ish

BUG=

Review URL: https://chromiumcodereview.appspot.com//12386098