Changed Object browser logic to work with websockets (#2419)

fixes #943

## What does this do?

This allows us to start streaming results to the list instead of waiting
to retrieve all the objects list before sending it to the client

Included a couple of fixes:

- Removed metadata for deleted items
- Fixed multiple metadata requests
- Fixed height grow for parent wrapper
- Fixed object reload after restore version


Signed-off-by: Benjamin Perez <benjamin@bexsoft.net>

Author: bexsoft