590 Upload datafile WIP

src/app/components/footer/footer.component.scss

...app/deposit/components/file-tree/file-tree.component.html

...app/deposit/components/file-tree/file-tree.component.scss

.../deposit/components/file-tree/file-tree.component.spec.ts

src/app/deposit/components/file-tree/file-tree.component.ts

...deposit/components/file-upload/file-upload.component.html

...deposit/components/file-upload/file-upload.component.scss

...osit/components/file-upload/file-upload.component.spec.ts

...p/deposit/components/file-upload/file-upload.component.ts

src/app/deposit/containers/file/file.container.html

src/app/deposit/containers/file/file.container.scss

src/app/deposit/containers/file/file.container.ts

src/app/deposit/deposit.action.ts

src/app/deposit/deposit.module.ts

src/app/deposit/deposit.state.ts

src/app/deposit/models/checksum.model.ts

src/app/deposit/models/deposit-data-file.model.ts

src/app/deposit/models/file-format.model.ts

src/app/deposit/models/upload-file-status.model.ts

src/app/deposit/views/detail/detail.view.html