Merge pull request #7802 from etiennesegonzac/bug-833982-call-fail-silent

Bug 833982 - Better call error handling when no network(cherry picked from commit 5df0c698b0c3f386b02e670a15e100a5d59ec3cd)

Conflicts:
	apps/communications/dialer/js/telephony_helper.js
Merge remote-tracking branch 'arcturus/v1-train-833982' into v1-train
Merge pull request #7907 from etiennesegonzac/bug-836166-network-check

Bug 836166 - dialer - lazily checking the connection when the call button is pressed.(cherry picked from commit 05de5726720b1c98671cdcb983b7ee493b271e2b)