Enhancement: Redesign files table related components

We've adjusted OcTable, OcResource, OcDrop and OcCheckbox
to fit the redesign.

https://github.com/owncloud/owncloud-design-system/pull/1958
https://github.com/owncloud/owncloud-design-system/pull/1978
https://github.com/owncloud/owncloud-design-system/pull/1988
https://github.com/owncloud/web/issues/6207
