Fixed #809: show a dialog when web platform experimental feature is not enabled
Added copyright headers
Moved script tag to head
Make polymer builder happy
nits
Move 'lint' step to grind.dart and include it in deployment sequence
fix polymer lint warning
spark-splitter: Add size attribute
set splitter size
Revert "set splitter size"

This reverts commit a7f185c5091537a77025c0a3327b01c79f769aa7.
nits
Merge pull request #816 from sunglim/size_splitter

spark-splitter: Add size attribute
Merge pull request #810 from dinhviethoa/809-web-platform-xp-feature

show a dialog when web platform experimental feature is not enabled
Merge pull request #814 from ussuri/update-grind-and-build

Move 'lint' step to grind.dart and include it in deployment sequence
Merge pull request #815 from sunglim/lint_fix

fix polymer lint warning
changed keybindings
Merge branch 'master' into devoncarew_tab_actions