[DOC beta] Fix Ember.computed docs
Merge pull request #3968 from tricknotes/fix-computed-doc

[DOC beta] Fix Ember.computed docs
[DOC beta] Fix syntax highlight
Merge pull request #3969 from tricknotes/code-highlight

[DOC beta] Fix syntax highlight
Fixes typo in error method documentation.
Merge pull request #3974 from abrinkman/master

Fixes typo in method documentation.
Cleanup test using Ember.$.trim

`String#replace(/\s+/g, '')` is the same as `Ember.$.trim`.
To simplify test code, I rewrite with the latter.
[DOC beta] Fix code highlight and add missing YUIDoc markup
Merge pull request #3979 from tricknotes/cleanup-tests

Cleanup test using Ember.$.trim
Merge pull request #3980 from tricknotes/fix-docs

[DOC beta] Fix code highlight and add missing YUIDoc markup
[DOC beta] Fixes highlighting
[DOC beta] fixes for docs
[DOC beta] fixes formatting
Merge pull request #3984 from twokul/enumerable-fix

[DOC beta] Fixes highlighting
Merge pull request #3983 from twokul/mutable-array-fix

[DOC beta] fixes formatting
Merge pull request #3982 from twokul/mutable-array-fixes

[DOC beta] fixes for docs
[BUGFIX beta] Do not use ENV if Ember.ENV exists.

This allows the use of `ENV` in your application without having Ember
hijack it for its uses.

To avoid using `window.ENV`, but still provide customization to Ember's
boot process you could use something like the following:

```javascript
ENV = 'DO NOT USE ME!!!!';

Ember = {ENV: {DISABLE_RANGE_API: true}};
```