Method: Ajax callback for `ap_search_tags`. This was called by tags field for fetching tags suggestions.
Method: Get POST (unsafe) value of a field.
Method: Check if post is in user’s session.
Method: Set a question id in session’s questions offset.
Method: Set an answer id in session’s answers offset.
Method: Delete all session data or just a key=>value pair.
Method: Get an offset by from AnsPress session.
Method: Set offset in AnsPress session.
Method: Set the session cookie.
Method: Delete session cookie.