Allow call to phone numbers or voice mail numbers only

It allows to call to well-formatted phone numbers or carrier specific
phone numbers starting with star sign such as *20 so that user can make
a call directly in a conversation for voice mail SMSs.

Revert "Check whether dialable only"

This reverts commit dbc43316cf.

Reason for revert: a call icon is disappeared for well-formatted phone
                   number with parentheses, dash and etc.

Test: Check the call icon in conversations for phone numbers and voice
      mail numbers.

Signed-off-by: Taesu Lee <taesu82.lee@samsung.com>
Change-Id: I1b279f8a5372b00a5a0c572f9969731f1e633389

src/com/android/messaging/datamodel/data/ConversationData.java

@@ -700,7 +700,7 @@ public class ConversationData extends BindableData {
         final ParticipantData participant = this.getOtherParticipant();
         if (participant != null) {
             final String phoneNumber = participant.getSendDestination();
-            if (!TextUtils.isEmpty(phoneNumber) && MmsSmsUtils.isDialable(phoneNumber)) {
+            if (!TextUtils.isEmpty(phoneNumber) && MmsSmsUtils.isPhoneNumber(phoneNumber)) {
                 return phoneNumber;
             }
         }