[z1884] Fix table layout for `creature_linking_template`

Also change `spell_pet_auras` and `spell_script_target` default charset to utf8 as expected. Check your SQL Userguide for proper charset convertion, but this should not be required

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

(based on commit [s1456] - 7ed6816)