Add header comments => DONE, Add auth tests => DONE

src/app/app.module.ts

src/app/auth/auth.module.ts

src/app/auth/init.keycloak.ts

src/app/auth/store/auth.action.spec.ts

src/app/auth/store/auth.action.ts

src/app/auth/store/auth.effects.ts

src/app/auth/store/auth.reducer.spec.ts

src/app/auth/store/auth.reducer.ts

src/app/auth/store/auth.selector.spec.ts

src/app/auth/store/auth.selector.ts

src/app/auth/store/user-profile.model.ts

src/app/core/components/nav.component.css

src/app/core/components/nav.component.ts

src/app/core/containers/app.component.css

src/app/core/containers/app.component.ts

src/app/search/containers/dataset.component.ts

src/app/static/static.module.ts

src/environments/environment.ts