Remove spark-select

spark-select has run its course. It was an earlier attempt at widgets and is now replaced by spark-selector.
Reflect the true nature of a var through a better name
Merge pull request #426 from ussuri/fix-var-names

Reflect the true nature of a var through a better name
fixed polymer with latest checkin
Merge pull request #427 from dart-lang/menus

fixed polymer with latest checkin
Merge pull request #410 from ussuri/remove-spark-select

Remove spark-select
Merge branch 'master' of https://github.com/dart-lang/spark
Merge branch 'master' into fix-esc