Updating Angular to version 1.6 (#11857)

* Update angular to 1.6 and ngDialog to 1.3.

* Remove broken Function.bind polyfill from kartograph that clashes w/ angular 1.6.

* $http.method().success/error functions do not exist in angular 1.6, just use standard promise interface.

* Maintain empty hash prefix for existing Piwik links.

See https://docs.angularjs.org/guide/migration#commit-aa077e8 for more info.

* Make sure radio setting values match availableValue values exactly.

Angular 1.6 uses strict equals when matching ng-value values w/ ng-model values, and the available values for boolean radio settings is always '0' or '1'. So we have to make sure the field value is '0'/'1'.

* Feedback form UI test code to remove piwik version string selected wrong element.

* Update expected screenshots (minor changes + unexplained default SMS provider change).