fix($http): fix and cleanup $http and friends

$http:
- use promises internally
- get rid of XhrFuture that was previously used internally
- get rid of $browser.defer calls for async stuff (serving from cache),
  promises will take care of asynchronicity
- fix transformation bugs (when caching requested + multiple request
  pending + error is returned)
- get rid of native header parsing and instead just lazily parse the
  header string

$httpBackend:
- don't return raw/mock XMLHttpRequest object (we don't use it for
  anything anymore)
- call the callback with response headers string

mock $httpBackend:
- unify response api for expect and when
- call the callback with response headers string
- changed the expect/when failure error message so that EXPECTED and GOT
  values are aligned

Conflicts:

	src/service/http.js
	test/service/compilerSpec.js
	test/service/httpSpec.js

0 files changed, 0 insertions, 0 deletions