Team highlights on the home page

New

• The team home used to show only how many devices were connected. Now it answers what the team did: the time saved by reading instead of listening, who sends the most audio, who the team spends the most call time with, and the busiest hours.
• A new card ranks the team's numbers by how much each one used, with the device name beside it. It's the missing half of "the team used 8 of its 10 hours".
• The same period picker as the device page works here: last 7, 30 or 90 days, or a billing period. Every card follows the choice.