Remove extraneous clientId setting, fix Audience
Remove extraneous clientId setting, fix Audience

In the case of the SPA, the javascript front end requests a token for its own backend.  There is a token that has this semantic: the id_token, which has the application's clientId as its audience claim.  Therefore, in this SPA we use the clientId as the audience value.
Azure-Samples/active-directory-angularjs-singlepageapp,Azure-Samples/active-directory-angularjs-singlepageapp,AzureADSamples/SinglePageApp-AngularJS-DotNet,dafunkphenomenon/SinglePageApp-AngularJS-DotNet,dafunkphenomenon/SinglePageApp-AngularJS-DotNet,Azure-Samples/active-directory-angularjs-singlepageapp,AzureADSamples/SinglePageApp-AngularJS-DotNet,18098924759/SinglePageApp-AngularJS-DotNet,dafunkphenomenon/SinglePageApp-AngularJS-DotNet,18098924759/SinglePageApp-AngularJS-DotNet,18098924759/SinglePageApp-AngularJS-DotNet,AzureADSamples/SinglePageApp-AngularJS-DotNet