(dev/core#2962) get contact id for the mailing along with display nam…

[yashodha]

…e and email

Overview

One would expect contact id to be returned here as well in getContactInfo method in CRM/Mailing/Event/BAO/Queue.php along with display name and email.

Before

no contact id available.

After

contact id exposed

[civibot]

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[eileenmcnaughton]

If we had a v4 api for that entity we could probably call it & delete that function from the looks

[totten]

This change looks pretty safe. I did a quick r-run, and it looks as advertised.

## Before
$ cv ev 'return CRM_Mailing_Event_BAO_Queue::getContactInfo(1);'
[
    "admin@example.com",
    "admin@example.com"
]

## After
$ cv ev 'return CRM_Mailing_Event_BAO_Queue::getContactInfo(1);'
[
    "admin@example.com",
    "admin@example.com",
    "202"
]

[yashodha]

@totten Thanks!