[4923] Oracle Tribe - Quest Chain

Chain relations corrected
Quest Fixed:
q.12571 'Make the Bad Snake Go Away'
q.12572 'Gods like Shiny Things'
q.12574 'Back So Soon?'
q.12575 'The Lost Mistwhisper Treasure'
q.12577 'Home Time!'
q.12578 'The Angry Gorloc'
q.12581 'A Hero's Burden'

3 companions:
Lafoo 28120
Jaloot 28121
Moodle 28122
Reconstructed..

*Note:
companions req. Core script - will be added later
Also issues fixed:
- summoned has no gossip taken from c_t - Fixed in core
- summoned wont be removed correctly if logout/in - Fixed in core

PArt of:
cmangos#291