Auto-switch current drive / indicator

[joepio]

Current behaviour of current drive is confusing in some scenarios:

• User visits drive A
• User closes window / context
• User opens resource (e.g. from invite) in drive B
• Drive A still selected

How to mitigate this?

• Show big 'set as current' drive header if there is a mismatch
• Always switch current drive. Maybe also show a 'back' button if recently switched?