Fix warning issues

[BobCashStory]

WARNING in /Users/martindonadieu/Documents/Projects.nosync/Cashstory/bob/src/app/services/speech-service.ts depends on 'rxjs/Rx'. CommonJS or AMD dependencies can cause optimization bailouts.
For more info see: https://angular.io/guide/build#configuring-commonjs-dependencies

WARNING in /Users/martindonadieu/Documents/Projects.nosync/Cashstory/bob/node_modules/@auth0/angular-jwt/__ivy_ngcc__/fesm2015/auth0-angular-jwt.js depends on 'url'. CommonJS or AMD dependencies can cause optimization bailouts.
For more info see: https://angular.io/guide/build#configuring-commonjs-dependencies

WARNING in /Users/martindonadieu/Documents/Projects.nosync/Cashstory/bob/src/app/workspace/upload-card/upload-card.component.ts depends on 'xlsx'. CommonJS or AMD dependencies can cause optimization bailouts.
For more info see: https://angular.io/guide/build#configuring-commonjs-dependencies

WARNING in /Users/martindonadieu/Documents/Projects.nosync/Cashstory/bob/node_modules/ngx-filesaver/__ivy_ngcc__/fesm2015/ngx-filesaver.js depends on 'file-saver'. CommonJS or AMD dependencies can cause optimization bailouts.
For more info see: https://angular.io/guide/build#configuring-commonjs-dependencies

[gilsonbridge]

Updated fix in PR #15