Running html5-validation immediately after model-value is updated is incorrect, because the view
has not updated, and HTML5 constraint validation has not adjusted.

Closes #6796
Closes #6806

The $document docs are pretty empty, and this fills them out a bit. The example itself may not be
particularly useful, but it could be improved or removed later. Works for me.

Closes #6757

The Android 2.x browser is not ES5-compatible in that it does not allow
use of reserved words as property names. This docs fix adds Android to the
note to the `$q` docs which already make it known that string property
notation should be used when using the `finally` method on `$q`.

$watchCollection checks if oldValue !== newValue which does not work for NaN. This was causing
infinite digest errors, since comparing NaN to NaN in $watchCollection would always return false,
indicating that a change was occuring on each loop.

This fix adds a simple check to see if the current value and previous value are both NaN, and
if so, does not count it as a change.

Closes #4605

The orderBy filter now allows string predicates passed to the orderBy filter to make use property
name predicates containing non-ident strings, such as spaces or percent signs, or non-latin
characters.

This behaviour requires the predicate string to be double-quoted.

In markup, this might look like so:

```html
<div ng-repeat="item in items | orderBy:'\"Tip %\"'">
...
</div>
```

Or in JS:

```js
var sorted = $filter('orderBy')(array, ['"Tip %"', '-"Subtotal $"'], false);
```

Closes #6143
Closes #6144

This was introduced by 2ca6d650e8a13cee28f11c38622cab231787325f, somewhat inexplicably as I had run
grunt ci-checks locally. But regardless, this should fix this up.

Updated example formatting.

Closes #6068

When the example for `ngAnimate` was added in commit:3344396, the `@param name` annotation was unintentionally duplicated. Remove this duplicate.

Closes #6720