Function: Update post attachment IDs.
Function: Updates terms of qameta.
Function: Set a question as a featured.
Function: Set subscribers count for a qameta.
Function: Updates last_active field of qameta.
Function: Get a qameta by post_id
Function: Append post object with apmeta feilds.
Function: Update views count of qameta.
Function: Clear selected answer from a question.
Function: Insert post meta