An Admin section for the owner of the service. Small fixes.

The plans on the Account page as one comparison table. The Team and Account pages open faster.

A new popup: search in the header, keyboard control, group filters, recent sessions, creating a session from the search. Four settings sections and a sessions table. The session's colour mark in the tab title and on the tab icon. A plain white look. A separate login per browser when syncing. The Team and Account pages open faster.