[IMP] mail: ease activities management by adding a shortcut-counter in top menu

This commit improves the use of activities through various applications
by adding a counter of activities displaying next activities grouped by
application. For each application activities are divided into late, today
and future activities in order to achieve a better management.

This commit also merges Inbox and Messaging icons in topbar to keep only
one displaying All / Chat / Channels messages.

0 files changed, 0 insertions, 0 deletions