IMS-VT: Add DIAG permission to the Dialer application.

Add DIAG permission to the Dialer application.

Change-Id: Ibb881f68646cdaafd3350d2ef6191aa620bb609f
IMS: Dialer app changes for IMS

IMS Conference URI UI changes
1. Add a new button for initiating conference URI
call in the Dial screen.
2. Send a intent for the conference call with a
extra to indicate the call type as conference
CRs-Fixed: 455241

Enable visibility of digits container for adding call
1. When a call is active, the user goes to home screen and presses
the phone button and then chooses add call. The recipients box
is not visible as the visibility of digits container is not
VISIBLE. In this change, the visibility of digits container is
set to VISBILE.
CRs-Fixed: 486790

Change-Id: Id0131d5063e2c95647a6f956d0d1a39128fba940
CRs-Fixed: 582011
Fix dialer force close.

If there is no activity to handle the intent
ACTION_RECOGNIZE_SPEECH, it leads to dialer force close
on tapping voice search button.
Add try catch statement to avoid the dialer force close.

Change-Id: Ie59f06608af913cee3f50a03ebceca9616e6bc8f
CRs-Fixed: 592572
Dialer: Add call log to google search

User can search the call log information in google search app.

Change-Id: I44480d2e1fc8e30f533839defa1c1d8110531f05