Fix alignment of blocks tab in Code demo.
Procedure blocks no longer destruct with hardcoded parent (no functional change).
Reduce duplicated code in text and list blocks.
Headless workspaces and blocks.
Use goog.global instead of this or window.
Convert cumbersome conditionals into calls to goog.getObjectByName.
Fix onchange handler handler.
Remove some DOM creation from headless fields.
Fix bug 34.
Merge branch 'master' of https://github.com/google/blockly into blockly-original