Fix incrementProperty/decrementProperty to be able to use with 0
Merge pull request #2544 from komasayuki/increment-by-zero

Fix incrementProperty/decrementProperty to be able to use with 0
Access __container__ directly, not via Ember.get.

This brings these two usages into alignment with the rest of the codebase which uses direct property access for this private property.
Merge pull request #2548 from eventualbuddha/access-container-directly

Access __container__ directly, not via Ember.get.
Allow missing whitespace for assertion fot html text

IE8 ignores whitespace between tag.
[wip] Fix test for setTimeout with negative wait
[wip] dirty but it works
Use evil code