Revert #3218, add deprecation notice for global Handlebars lookups.
Close #5088 - Fix usage of document.body.contains, check if browser supports this method(ex. ff 3.6)
Deprecate edge-case get and normalizeTuple behavior ahead of #3852

PR #3852 changes some edge case behavior for get and normalizeTuple. Ahead
of those changes, this commit introduces deprecation notices.

  * Deprecate get for local paths on global contexts, only if they
    return data.
  * Deprecate normalizeTuple calls that return a non-global contenxt
    and a simple global path.
[Bugfix beta] if no view is found, we should not stop propagation as it is likely a virtual view or no longer present.

This interferes with using other libraries when they do want these events
Update github user for bower.
[DOC] Fix typo in Array docs
Merge pull request #5185 from linstula/fix-typo

[DOC] Fix typo in Array docs
Cleanup copy.js, remove unused import, etc..

Make easier to read and debug..
Fix typo in tests
Merge pull request #5187 from knownasilya/copy-cleanup

Cleanup copy.js, remove unused import, etc..
Merge pull request #5186 from jugglinmike/fix-typo

Fix typo in tests
[DOC release] Move example comments to new line

Prevents the user from having to scroll horizontally to
read the examples.
ember-runtime syntax fixes..
Merge pull request #5188 from knownasilya/code-fixes

ember-runtime syntax fixes..
Merge pull request #5183 from knownasilya/example-new-line

[DOC release] Move example comments to new line
update ember-cli
misc cleanup as i read
[Bugfix beta] SimpleHandlebarsView should not render, if the previous rendered normalizedValue is the same as the new normalizedValue;
Merge pull request #5189 from stefanpenner/fix-update

[Bugfix beta] SimpleHandlebarsView should not render, if the previous re...
[Bugfix beta] ensure Binding doesn’t change shape on us by predefining its members