Personal space ids in URL

[kulmann]

Steps to reproduce

1. log in to ocis
2. navigate into the Personal view

Expected behaviour

See the space id of the personal space of the logged in user in the URL

Actual behaviour

The URL has /personal/home/ in the path

Goals

Consistency

Currently we navigate into project spaces by id. We should use space ids in the URLs for all kinds of spaces -> make it consistent. Then it will be easier to implement navigation by drive alias.

Access other users' resources

Given the permissions allow it, users can share browser URLs with other users.