CallItem was only used before NC 14.
rv_item_conversation.xml was used by CallItem. After CallItem is now deleted, rv_item_conversation.xml was deleted from other xml classes as "tool"-view (this didn't make sense & was only a placeholder)
Furthermore, it was renamed to account_item.xml as now it is only used for account selection.
Signed-off-by: Marcel Hibbe <dev@mhibbe.de>