fixed tests and added some more documentation

...app/+item-page/edit-item-page/edit-item-page.component.ts

...edit-in-place-field/edit-in-place-field.component.spec.ts

...edit-item-page/item-metadata/item-metadata.component.html

...t-item-page/item-metadata/item-metadata.component.spec.ts

.../edit-item-page/item-status/item-status.component.spec.ts

...-page/edit-item-page/item-status/item-status.component.ts

src/app/core/data/object-updates/object-updates.actions.ts

src/app/core/data/object-updates/object-updates.reducer.ts

...p/shared/input-suggestions/input-suggestions.component.ts

src/app/shared/input-suggestions/input-suggestions.model.ts