FEAT #7722 Contacts Group List

modules/sendmail/mail_form.php

rest/index.php

src/app/contact/controllers/ContactGroupController.php

src/app/contact/models/ContactGroupModelAbstract.php

src/app/contact/models/ContactModelAbstract.php

src/core/controllers/AutoCompleteController.php

src/core/lang/lang-en.php

src/core/lang/lang-fr.php