Class: QA Query class
Method: Pre fetch current users vote on all answers
Function: Set flags count for a qameta
Function: Increment flags count.
Function: Updates selected field of qameta.
Function: Set subscribers count for a qameta.
Function: Updates terms of qameta.
Function: Updates last_active field of qameta.
Function: Get a qameta by post_id
Function: Update count of answers in post meta.