First pass at Polymer (mostly older stuff)

 * Proof of concept embedded ICE (Paired with @lordzork)
 * Switch to scheduled_test for better async testing
 * Changes for Dart 1.0
 * Transformer to correct Polymer's non-minification
 * Update polymer and sample with nicer copy

Squashed with @terrasea
Remove no longer used transformer
Fix to allow the Polymer to compiler

For some reason, it does not like minifying JS. The Doctype on the polymer
eliminates a warning as well.
Fix positioning of the preview element in Polymer

Use relative / absolute trick to get it lined up properly.

Still have an extra 50px that we had to manually add due to <p> tags that
add instructions.

Paired with @terrasea
Better positioning of preview relative to code

Replaced the previous hard-coded value with a solution based on keeping the
two elements adjacent in the DOM, making relative positioning trivial.

Paired with @terrasea

Fixes #84
Remove a bunch of unsed files and scripts

 * Remove unused event tester
 * Remove no longer needed JS interop javascript file
 * Remove old script/template attempt at inlining ICE on pages
   Superseded by Polymer implementation

Paired with @terrasea
Updated to latest Polymer

#85
Using Page Component to test ice-code-editor polymer element

Having trouble with schedule not being called.

@TODO: check to see if schedule(() => Polymer.onReady) is returning and completing a future
Fixed tests

Needed to manually call initPolymer() and remove the annotation
Include polymer tests in test runner

Paired with @terrasea

#85