feat($animate): provide support for a close callback

Closes #5685
Closes #5053
Closes #4993
docs(search): make sure the forward slash doesn't focus on search while on another input element

Closes #5969
docs(changelog): release notes for 1.2.10
chore(release): cut v1.2.10 release
chore(release): start v1.2.11 (1.2.11)
chore(release): update cdn version
docs(ngSwitch): fixed typo 'choses' to 'chooses'

Closes #5992
docs(select): rephase note on ngOptions

added 'an' and 'the' to ngOptions sentence

Closes #5993
chore(docs): remove note about removing disqus
style(triaging.md): removing ws
docs(triaging.md): update the 'PRs plz!' label name
fix(mocks): refactor currentSpec to work w/ Jasmine 2

Closes #5662
docs(cookbook): remove the cookbook docs

The cookbook docs are now superceded by the guide. They are no longer available
in any menus and the only way to find them is to search for them. Remove!

Closes #5967
test(docs): convert example end to end doc tests from scenario runner to protractor

Thanks to jeffbcross, petebacondarwin, btford, jdeboer, tbosch for contributions!

Closes #6023
docs(compile/nodomevents): fix typo ng-mode -> ng-model

correcting directive name to ng-model instead of ng-mode in nodomevents.ngdoc

Correcting use of ng-model directive

Closes #6036
docs($provide): return instance of Ping, rather than constructor

Updating $provide.service method docs

The previous example provided for the service method did not work.  I've updated the example to a working example.

I think this version of the example will probably make more sense to most people, and the factory method would be
a better place for this sort of example.

Closes #6008
chore(grunt): sort the grunt task load statements
chore(build): add jscs code style check to our build

Closes #6062
fix(docs): clarify doc for "args" in $broadcast and $emit

Closes #6047.
Edited the 'Flushing HTTP requests' section

Minor grammatical edits in the Flushing HTTP requests section.