[Master] Costume Bonus percentages for heroes

[danenp]

Also the upcoming glass costumes,

@EmpiresPuzzles

• x4 Costume Bonus for Legendary Heroes:
• +65% Attack / +65% Defense / +70% Health / +5% Mana
• x4 Costume Bonus for Epic Heroes:
• +19% Attack / +19/ Defense / +24% Health / +5% Mana
• x3 Costume Bonus for Rare Heroes:
• +17% Attack / +17% Defense / +22% Health / +5% Mana