Method: Migrate old datas.
Method: Set the reputation events icon.
Method: Update disallow_op_to_answer option.
Function: Merges user defined array arguments into the defaults array, which works with arrays only.
Function: Verify the __nonce field.
Method: Disable admin bar for non-administrator users.
Method: Filter document_title_parts.
Function: Localize scripts for enqueue.
Function: Insert a reputation event to database.