fix(date): correctly format dates with more than 3 sub-second digits

This date {{2003-09-10T13:02:03.123456Z | date: yyyy-mm-dd ss} is now
treated as having 123.45ms. Previously it had 123456ms so 123 seconds
were added to the formatted date.
Use local date in unit tests so they work in any time zone
feat($cookieStore): $cookieStore.get now parses blank string as blank string

closes #1918
fix(angular): do not copy $$hashKey in copy/extend functions.

Copying the $$hashKey as part of copy/extend operations makes little
sense since hashkey is used primarily as an object id, especially in
the context of the ngRepeat directive. This change maintains the
existing $$hashKey of an object that is being copied into (likewise for
extend).
It is not uncommon to take an item in a collection, copy it,
and then append it to the collection. By copying the $$hashKey, this
leads to duplicate object errors with the current ngRepeat.

Closes #1875
style($compile): clarify argument name
test(sortedHtml): fix comment support in sortedHtml helper
test(sortedHtml): ignore bogus rowspan=1 and colspan=1 in IE
chore(docs): use done() in gen-docs.js
refactor($resource): simplify url template expansion
feat(ngdocs): add variable type hinting with colors
chore(ngIf): Add animation code to ngIf example and docs text to ngAnimate docs
feat($sniffer): Add support for supportsAnimations flag for detecting CSS Animations browser support
feat(ngAnimate): Add support for CSS3 Animations with working delays and multiple durations
chore(ngAnimate): CSS classes X-setup/X-start -> X/X-active

BREAKING CHANGE: css classes foo-setup/foo-start become foo/foo-active

The CSS transition classes have changed suffixes. To migrate rename
.foo-setup {...} to .foo {...}
.foo-start {...} to .foo-active {...}

or for type: enter, leave, move, show, hide

.foo-type-setup {...} to .foo-type {...}
.foo-type-start {...} to .foo-type-active {...}
fix(scenario): update to use our angular-scenario.js rather then karma
docs($window): fix example
docs(tutorial): add comment about injection annotation

Closes: #1163
style(*): fix up semicolon and var usage
docs(Angular.js) move forEach docs to correct place
docs(guide): fix typo on model name
fix(ngPluralize): handle the empty string as a valid override

Fix the check for overrides so it is able to handle the empty string

Closes #2575