Enhancement: Show webdav information in details view

We've added WebDav path and WebDav url information to the details view,
this might be usefully when the user wants to add an external WebDav client.

By default this view option is disabled but can be enabled via account->preferences view.

https://github.com/owncloud/web/pull/10062
https://github.com/owncloud/web/pull/10190
https://github.com/owncloud/web/pull/10196
https://github.com/owncloud/web/issues/9714
