Enhancement: Indicate processing state

If a file has been just recently uploaded, it might go trough a processing state (e.G virus scan).
If so, no actions on this resource is possible, therefore we show now the processing state and make
the temporary restrictions clear to the user.

https://github.com/owncloud/web/pull/9561
https://github.com/owncloud/web/pull/9585
https://github.com/owncloud/web/pull/9590
https://github.com/owncloud/web/pull/9596
https://github.com/owncloud/web/issues/9558
