Scripts/Ulduar: Spellscripts for Mimiron

Closes #12579

Signed-off-by: DDuarte <dnpd.dd@gmail.com>
Core/RBAC: Fix RBAC permissions

This commit adds three missing commands to the world.commands table. The RBAC.h file is updated to the correct IDs from the auth.rbac_permissions table and the world.commands table. The RBAC.h file also had to be reordered to keep it clean.

Closes #12854

Signed-off-by: DDuarte <dnpd.dd@gmail.com>
Rename 2014_08_14_02_world_command.sql to 2014_08_18_01_world_command.sql
Core/Creatures: Fixed an arithmetic error in respawn code

Creatures should now respawn correctly in their correct time.
Issue was caused by single-precision floating-point format losing precision on lower digits with high numbers, for reference http://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html
Closes #12428