docs(guide/unit-testing): minor style and grammar changes

Closes #5057
chore: use temporary version of grunt-jasmine-node

This should be reverted once https://github.com/jasmine-contrib/grunt-jasmine-node/pull/33 gets merged in the upstream repo.

It fixes the problem where Grunt does not fail the build, even though there are failures.
See https://travis-ci.org/angular/angular.js/builds/14329011#L2366
test(docs): fix the failing specs

Because Grunt was not failing the build, we didn't noticed these failing specs.
fix($compile): ensure CSS classes are added and removed only when necessary

When $compile interpolates a CSS class attribute expression it will
do so by comparing the CSS class value already present on the element.
This may lead to unexpected results when dealing with ngClass values being
added and removed therefore it is best that both compile and ngClass delegate
addClass/removeClass operations to the same block of code.
fix($animate): ensure addClass/removeClass animations do not snap during reflow

Closes #4892
fix($animate): ensure transition animations are unblocked before the dom operation occurs

Transitions are blocked when the base CSS class is added at the start of the animation. This
causes an issue if the followup CSS class contains animatable-styles. Now, once the animation
active state is triggered (when the animation CSS dom operation occurs) the animation itself
will always trigger an animate without a quick jump.

Closes #5014
Closes #4265
fix($animate): ensure keyframe animations are blocked around the reflow

Keyframe animations trigger on the first CSS class and not the second.
This may cause a slight flicker during a stagger animation since the
animation has already started before the stagger delay is considered.
This fix ensures that the animation is blocked until the active animation
starts which allows for staggering animations to take over properly.

Closes #5018
chore($animate): remove unnecessary reflective dereferencing
fix(ngAnimate): correctly retain and restore existing styles during and after animation

Closes #4869
fix(tests): Correct tests for IE11

Some tests were wrong. However, src/* did not contain problems.

Fixes #5046
fix(ngInclude): Don't throw when the ngInclude element contains content with directives.

Related to #5069
fix(ngView): Don't throw when the ngView element contains content with directives.

Fixes #5069
fix(loader): expose `$$minErr` to modules such as`ngResource`

This is highlighted in angular-phonecat when you try to use the index-async.html
which needs to load the ngResource module asynchronously but fails when it tries
to call `angular.$$minErr` to create the $resourceMinErr object.

Closes #5050
fix(ngMock): fixes httpBackend expectation with body object

Fixes an issue with httpBackend expectations where a given body object
may not match the actual request body if its keys are serialized in a
different order.

Closes #4956
fix(httpBackend): should not read response data when request is aborted

When a request is aborted, it makes no sense to read the response headers or text.
Also in IE9, trying to read data (either response headers or text) from an aborted request
throws an Error c00c023f.

Fixes #4913
Closes #4940
fix($compile): secure form[action] & iframe[srcdoc]

Require bindings to form[action] to be $sce.RESOURCE_URL and bindings to
iframe[srcdoc] to be $sce.HTML

Closes #4927
Closes #4933