Add test for Function.prototype.property.
Function.prototype methods should be undefined.
[BUGFIX] Allow keyboard events to work with the action helper.

The way action helper was validating the modifier keys against the
helper's allowedKeys option assumed a mouse/touch event. This commit
changes that to treat mouse/touch events differently.

Fixes #3340
Updated documentation for Ember.Object init method

No need to call ```this._super()``` when extending Ember.Object. Like it says in the "NOTE" :-)
Merge pull request #3666 from hkjorgensen/patch-1

Updated documentation for Ember.Object init method
Merge pull request #3663 from lukemelia/keyboard-actions

[BUGFIX] Allow keyboard events to work with the action helper
Merge pull request #3649 from rjackson/add_property_prototype_test

Add test for Function.prototype.property.