Multi-Account Containers-like features for Firefox Accounts

[davidvkimball]

Associate a container to a Firefox account - rather than having to swap between different browser profiles, allow it to just be tabs. For example, User A can sign into Firefox and get User A's bookmarks, history, etc. User A installs the Multi-Account Containers extension, and creates a new container, and connects User B's Firefox account to it. Now when User A opens a container tab, User A can select the container associated with User B - get User B's history, bookmarks, etc.