Contact Info Widget: add 2 hooks to add data to the widget.

[jeherve]

Once the hooks are added, a site owner could add data to the form like so:

function jeherve_add_mailto_widget() {
    echo "<a href='mailto:me@example.com'>Contact us!</a>";
}
add_action( 'jetpack_contact_info_widget_end', 'jeherve_add_mailto_widget' );

Suggested here:
https://wordpress.org/support/topic/add-an-email-link-to-contact-info-jetpack-hours-info-widget?replies=1&view=all

[eliorivero]

Maybe this could be named _start instead? Writing beginning is prone to errors for non-english devs and there are a couple of actions in core that end in _start so it's more consistent.

[jeherve]

Good point! I changed that in 04db263

[eliorivero]

Added @module into inline docs but other than that, lgtm and works fine.

[jeherve]

👍 I had forgotten about that!