Enhancement: Trash bin

We've improved the trash bin in general:
* Add compatibility with owncloud-sdk 3.0.0-alpha 1
* Add a confirmation dialog while hitting the `Empty trash bin` button
* Add trash bin for project spaces
* Change personal trash bin route from `files/trash` to `files/trash/personal`

https://github.com/owncloud/web/pull/6566
https://github.com/owncloud/web/issues/6544
https://github.com/owncloud/web/issues/5974

