Core/Talents: Align server checks to Client limits

Set the max amount of talents to process in CMSG_LEARN_PREVIEW_TALENTS to 150 ( 44 talents for 3 trees rounded up ).
Core/Talents: Align server checks to Client limits

Set the max amount of talents to process in CMSG_LEARN_PREVIEW_TALENTS_PET to 30 ( 24 talents rounded up ).
DB/Quest: Fix some missing quest texts

By Crysicle, closes #12214 closes #12209