Replace dialogs for snackbars on Bookmarks + fireproof websites

[malmstein]

Is your feature request related to a problem? Please describe.
Currently, we show a confirmation dialog when a user deletes a bookmark or deletes a fireproof website. See attached screenshot

Describe the solution or the user experience you'd like
Introduce a Snackbar with an action button to "Undo".

Additional context

Proposed copy
Description: {website} deleted
Action: Undo

Screenshots:

Before	After

[abdulbasit75]

I would like to work on this issue, please assign me.

[malmstein]

Thanks @abdulbasit75, but there is a PR already opened for it #951. Feel free to comment on it or look at help wanted and hacktoberfest if you are looking to contribute.

[cmonfortep]

Tracking this here: https://app.asana.com/0/414730916066338/1199514257586717/f

[cmonfortep]

Closing this. This was done in #1056