[9898] Implement redundent values check in `spell_bonus_data`

[newsbot]

<pre>m sql/mangos.sql
+ sql/updates/9999_01_mangos_spell_bonus_data.sql
m src/game/SpellMgr.cpp
m src/shared/revision_nr.h

[9898] Implement redundent values check in `spell_bonus_data`

Also do table content cleanup base at added feature.

Original check code provided by nos4r2zod.</pre>



Дальше... (http://github.com/mangos/mangos/commit/c3ebcd638e06e8eb84a9ef6ccf16a8e135d68d75)