basic proof of concept file activity support - will send activity via the filestorage module and via attach_delete()

include/conversation.php

@@ -1572,7 +1572,7 @@ function profile_tabs($a, $is_owner=False, $nickname=Null){
 		$tabs[] = array(
 			'label' => t('Files'),
 			'url'	=> $a->get_baseurl() . '/cloud/' . $nickname . ((get_observer_hash()) ? '' : '?f=&davguest=1'),
-			'sel'	=> ((argv(0) == 'cloud') ? 'active' : ''),
+			'sel'	=> ((argv(0) == 'cloud' || argv(0) == 'sharedwithme') ? 'active' : ''),
 			'title' => t('Files and Storage'),
 			'id'    => 'files-tab',
 		);