Move mod Contacts to /src/Module

mod/allfriends.php

@@ -12,9 +12,9 @@ use Friendica\Model\Contact;
 use Friendica\Model\GContact;
 use Friendica\Model\Profile;
 use Friendica\Util\Proxy as ProxyUtils;
+use Friendica\Module\Contacts;
 
 require_once 'include/dba.php';
-require_once 'mod/contacts.php';
 
 function allfriends_content(App $a)
 {
@@ -96,7 +96,7 @@ function allfriends_content(App $a)
 		$entries[] = $entry;
 	}
 
-	$tab_str = contacts_tab($a, $contact, 4);
+	$tab_str = Contacts::contacts_tab($a, $contact, 4);
 
 	$tpl = get_markup_template('viewcontact_template.tpl');