feat($http): new $http service, removing $xhr.*

Features:
- aborting requests
- more flexible callbacks (per status code)
- custom request headers (per request)
- access to response headers
- custom transform functions (both request, response)
- caching
- shortcut methods (get, head, post, put, delete, patch, jsonp)
- exposing pendingCount()
- setting timeout
Breaks Renaming $xhr to $http
Breaks Takes one parameter now - configuration object
Breaks $xhr.cache removed - use configuration cache: true instead
Breaks $xhr.error, $xhr.bulk removed
Breaks Callback functions get parameters: response, status, headers
Closes angular#38
Closes angular#80
Closes angular#180
Closes angular#299
Closes angular#342
Closes angular#395
Closes angular#413
Closes angular#414
Closes angular#507

Author: vojtajina

angularFiles.js

@@ -31,10 +31,7 @@ angularFiles = {
     'src/service/scope.js',
     'src/service/sniffer.js',
     'src/service/window.js',
-    'src/service/xhr.bulk.js',
-    'src/service/xhr.cache.js',
-    'src/service/xhr.error.js',
-    'src/service/xhr.js',
+    'src/service/http.js',
     'src/service/locale.js',
     'src/directives.js',
     'src/markups.js',

src/AngularPublic.js

@@ -76,6 +76,7 @@ function ngModule($provide, $injector) {
   $provide.service('$exceptionHandler', $ExceptionHandlerProvider);
   $provide.service('$filter', $FilterProvider);
   $provide.service('$formFactory', $FormFactoryProvider);
+  $provide.service('$http', $HttpProvider);
   $provide.service('$location', $LocationProvider);
   $provide.service('$log', $LogProvider);
   $provide.service('$parse', $ParseProvider);
@@ -85,9 +86,5 @@ function ngModule($provide, $injector) {
   $provide.service('$rootScope', $RootScopeProvider);
   $provide.service('$sniffer', $SnifferProvider);
   $provide.service('$window', $WindowProvider);
-  $provide.service('$xhr.bulk', $XhrBulkProvider);
-  $provide.service('$xhr.cache', $XhrCacheProvider);
-  $provide.service('$xhr.error', $XhrErrorProvider);
-  $provide.service('$xhr', $XhrProvider);
 }