docs(loader): fix typo and minor semantic error
docs(tutorial/step_07): add commas make tutorial read more clearly
docs(tutorial): add missing 'node' command and <code> tags
docs(directive): fix typo
feat(jqLite): switch bind/unbind to more recent jQuery on/off

jQuery switched to a completely new event binding implementation as of
1.7.0, centering around on/off methods instead of previous bind/unbind.
This patch makes jqLite match this implementation while still supporting
previous bind/unbind methods.
fix($http): ensure case-insens. header overriding

If user send content-type header, both content-type and default
Content-Type headers were sent. Now default header overriding is
case-insensitive.
docs(ngRepeat): fix typo
fix(Angular.js): don't crash on invalid query parameters
docs(cookbook/helloworld): display "World" if no name is entered
refactor(angular.bootstrap): rename internal function
fix($animator): ensure animations are always disabled for an element that is not attached to the DOM
fix($animator): ensure that the active CSS class is not applied to the element if the animation is cancelled early
feat(ngAnimate): provide support to execute multiple CSS and JS animations to in parallel per event
feat(ngAnimate): provide support for animator animation callbacks

prior to this feature, there was no way to detect when an animation has completed
when using $animator inside directives. An optional "done" callback function can
can be now provided to for animation instance method which is fired once the animation has
completed or when a new animation takes place on the same element.

BREAKING CHANGE: in $animator, all public-facing instance methods have
been changed to accept a final callback function argument:

Use the following animation instance methods when performing animations
inside of directives:
animator.enter(element, parent, after, done);
animator.leave(element, done);
animator.move(element, parent, after, done);
animator.show(element, done);
animator.hide(element, done);
animator.animate(event, element, done);
feat(ngAnimate): provide support for addClass and removeClass animation handlers
feat(ngClass): provide support for animation