Merge pull request #7972 from lodr/bug-819919-data-usage-notification

Bug 819919 - Notification when data limit is trespassed added. Monitorization on network activity added as well.
Cause r+(cherry picked from commit 275834e26ac4c7777d4534e47a03f431cbd57dcc)
(cherry picked from commit 8f96039149ed54724e986cd5638640f4cf5ca066)