[z1947] Implement spell 27819, thanks to stfx for research

Signed-off-by: Schmoozerd <schmoozerd@scriptdev2.com>
Signed-off-by: Nighoo <nighoo@gmail.com>

(based on commit [s1536] - fccca12)
[z1948] Unify loot related code and fix engrish.

Also readd the m_groupLootId check in case the StopGroupLoot will be called from other places

Signed-off-by: Schmoozerd <schmoozerd@scriptdev2.com>

(cleaned version of c3f5caa)

(based on commit [s1537] - da5415c)
[z1949] Add support to send the anim for SMSG_TAMEOBJECT_CUSTOM_ANIM

Signed-off-by: Schmoozerd <schmoozerd@scriptdev2.com>
Signed-off-by: Nighoo <nighoo@gmail.com>

(cleaned version of c44a5d9)

(based on commit [s1538] - 3abcd49)