[BUG] Confirmation by pressing Space on confirm screens

[borisstoyanov]

Describe the bug
Some usability from old ui can be implemented here as well. When ever we have a confirmation screen we need to click with the mouse, instead as per the old ui we can press Space to toggle the confirmation of expunge etc..

To Reproduce
Steps to reproduce the behavior:
Expunge a volume
Delete a VM
and more...

Screenshots
If applicable, add screenshots to help explain your problem.

[davidjumani]

This might require changing several custom forms to set autofocus. Makes sense to do it as a part of 1.1

[yadvr]

We've one PR merge in #784 that fixes for auto-generated forms, for rest of the forms we can aim wrt 1.1