Revamp activities window

[Albirew]

Right now, activities window is more like a leftover of the old firefox download window, a relic from the past. Let's change this for a more useful tab.

I was thinking about a "sync status center" where you can check in a table the status of:
column1: all mail accounts: one account per line
column2: all other sync statuses (calendars/tasks/caldav, ical, contacts/carddav, IM, etc.)

with on each, last successful sync date/time and sync status (failed:red/syncing:blue/OK:green), and maybe a button to force sync a specific account

maybe something like this (crude edited screenshot):

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[Danfost]

(automatically translated)

👍Thanks,
I miss the fact that the messages calls are not displayed.
Greetings