docs(angular.identity): fix missing 'angular' in identity function
fix(ngdocs): merge duplicate css class attributes
docs(ngMock): correct verifyNoOutstandingExpectation example
style(input): remove ws
docs(overview): fix typo

Removed repeated "the" in the sentence: The input invalidates itself by turning red when you enter invalid data or leave "the" the input fields blank (Line 137).
docs(contribute): improve git instructions
docs(guide/di): fix typo
docs(guide): example filter does not conditionally assign a color
docs(guide): clarify example
docs(ngList): fix example and add e2e test
test(ngList): remove disabled test

this test fails and we don't have intentions on making it pass since
we never made a commitment to implement this feature.
chore(build): add check for merge conflicts, ddescribe, and iit
fix($injector): improve $injector:nomod error message

Closes #2695
refactor(Angular.js): remove code duplication

Closes #2890
style(sanitize): fix typo in variable names
fix(scope): watches can be safely unregistered inside watch handlers

Closes #2915
feat(ngDocs): add links to source for API

 - add tests
 - the link points to the gruntUtil.getVersion().number tree on github
fix(ngValue): made ngValue to write value attribute to element
fix(ngSubmit): expose $event to ngSubmit callback
fix(sanitize): match URI schemes case-insensitively

According to RFC 3986 (http://tools.ietf.org/html/rfc3986#section-3.1)
schemes such as http or mailto are case-insensitive. So links such as
http://server/ and HTTP://server/ are valid and equivalent.

Closes #3210