Updated Guild Parsing for CrossRealm/BNet Support

Updated Guild Parsing for CrossRealm/BNet Support
-Added Cross Realm / BNet support for guilds.  You can now see items in guilds if XR/BNet is enabled.
-Changed how the Guild names are displayed so they can include the realm information if XR/BNet is enabled.
-Added XR/BNet support for guilds in the BagSync Search window.  It will now properly scan the guilds across XR/BNET if it's enabled.
-Fixed a bug in the BagSync search where @guild was not properly returning the items of the currently logged in characters guild bank.  It should now work as intended.
-Changed the BagSync addon header as it was super old already.  The code has been reworked so many times now that it's not even closely related to the original code back in 2007, which was based off Tuller's Bagnon_Forever code.
-Kept the credit towards Tuller cause he's awesome :)  <3 Bagnon