gulp-my-tasks: when injecting stubs into index.html we will also inject angular...

gulp-my-tasks: when injecting stubs into index.html  we will also inject angular-mock

* angular-mock enables us to use ngMockE2E
* karma.conf.js requires $templateProvider. It is useful when templates in directives are located
      in html files instead of right in the code. We could also use karma-ng-html2js-preprocessor
      but in my case i don't need it because I am already generating my templates :)