[0061] Added missing gossip menus from UDB-404 data

BACKUP YOUR DATA BEFORE UPDATING

* Thanks to evil-at-wow for the data backported from UDB
  (UDB original data by X-Savior, SD2 team and UDB team)
  The TBC content was previously removed by evil-at-wow
* Updated 'npc_option_npcflag' from backported data according to what classic core expects
  Note: the difference of behavior between the two cores might be investigated as the GOSSIP enum
  data are the same in classic and TBC