Added more comments

src/app/+login-page/login-page.component.ts

src/app/core/data/data.service.ts

...p/core/submission/models/normalized-workflowitem.model.ts

.../core/submission/models/normalized-workspaceitem.model.ts

src/app/core/submission/models/submission-object.model.ts

...ore/submission/models/workspaceitem-section-form.model.ts

.../submission/models/workspaceitem-section-license.model.ts

...mission/models/workspaceitem-section-upload-file.model.ts

...e/submission/models/workspaceitem-section-upload.model.ts

...pp/core/submission/models/workspaceitem-sections.model.ts

...re/submission/submission-json-patch-operations.service.ts

...pp/core/submission/submission-response-parsing.service.ts

src/app/core/submission/submission-rest.service.ts

src/app/core/submission/workflowitem-data.service.ts

src/app/core/submission/workspaceitem-data.service.ts

src/app/shared/alerts/alerts.component.ts

...hority-confidence/authority-confidence-state.directive.ts

src/app/shared/utils/object-ngfor.pipe.ts

src/app/submission/selectors.ts

src/app/submission/submission.reducers.ts