WIP : CFD-144 log group activity

Modules to support logging activity in the message table for:
* create/edit/delete node content.
* create/edit/delete comments.
* activities about users and group membership.
coding standarts -- should be on the same line
``function c4m_activity_comment_form_node_type_form_alter(&$form, &$form_state, $form_id) {``