chore(ngScenario): make jshint happy

Someone accidentally removed an important keyword which prevented a variable from being added to the global object

Closes #9484
test(matchers.js): make toHaveClass matcher work better for SVG+jQuery
fix(ngAnimate): defer DOM operations for changing classes to postDigest

When ngAnimate is used, it will defer changes to classes until postDigest. Previously,
AngularJS (when ngAnimate is not loaded) would always immediately perform these DOM
operations.

Now, even when the ngAnimate module is not used, if $rootScope is in the midst of a
digest, class manipulation is deferred. This helps reduce jank in browsers such as
IE11.

Closes #8234
Closes #9263
WIP: Fixuppin

Always defer class manipulation DOM writes until the end of digest on the root scope, even when animations
are disabled.

BREAKING CHANGE:

The $animate class API will always defer changes until the end of the next digest. This allows ngAnimate
to coalesce class changes which occur over a short period of time into 1 or 2 DOM writes, rather than
many. This prevents jank in browsers such as IE, and is generally a good thing.

If you're finding that your classes are not being immediately applied, be sure to invoke $digest().
WIP --- fixups
refactor($compile): use labaled variables to represent nodeType values

This also does some cleanup in $animate