Add Remove Container button to the view with VNC

[tymfear]

Currently remove container button is present only on dashboard. But for huge clusters it might be unclear which container user would like to close, especially when new containers appear all the time. So it would be nice to have the button on the container view. It would be cool to have prompt for removal, to protect user from accidental removal.

Also, currently container is removed without any prompt, which might be accidental. So it would be nice to have some modal, that will prompt for removal. Or another option is to have something like removal mode: remove buttons are not present by default, but when user enters removal/edit mode, the buttons will appear. That will prevent accidental click and removal of the container.