Implement Health/Mana fixes to server repo

When I use
[code]
UPDATE creature_template, creature_template_classlevelstats SET PowerMultiplier = MinLevelMana/BaseMana
WHERE creature_template_classlevelstats.Level = MinLevel and BaseMana != 0;
[/code]
I get "#1054 - Unknown column 'PowerMultiplier' in 'field list'" because the table isn't there (imported the newest Rel20 DB though with all possible updates)

Implemented in commit [URL]https://github.com/mangoszero/database/commit/5456b16ba4382702514783ea41f3a02c953a8cdf[/URL]