Dialer: Hide "Add 2-sec pause" and "Add wait" if phone number is empty

There is no operation to hide "Add 2-sec pause" and
"Add wait" options.

When the phone number is empty, hide "Add 2-sec
pause" and "Add wait" options.

CRs-Fixed: 537440

Change-Id: Ia799e11808e57919f471437021e7d6d62edea07c
Dialer: Don't delete '+' for number when enter select contact interface

The number we get from adapter has been formatted, so the '+' is
deleted.

Use the original number that we input When entering the select
contact interface.

CRs-Fixed: 662672

Change-Id: I8fd5774be4ae03abf249409b4f869bd9adaed29c
Dialer: Send broadcast to cancel missed vtcalls notification

When entering the call log fragment, it only cancels missed voice
calls notification but ignores the video calls notification.

Send broadcast to let VideoCall app cancel the missed vtcalls.
notification.

CRs-Fixed: 636302

Change-Id: I00517dd627bcfe52446509e935fac96372539ce4