Rewrite keybinding system

@Arcaratus, I don't even know what you were thinking with that...

I'm still not happy with IKeybindable, but the system is at least better than it was

src/main/resources/assets/bloodmagic/lang/en_US.lang

@@ -664,9 +664,9 @@ commands.soulnetwork.fillMax.success=Successfully filled %s's Soul Network to th
 commands.soulnetwork.create.success=Successfully created %s's Soul Network (Orb tier: %d)
 
 # Keybinds
-BloodMagic.keybind.openSigilHolding=Open Sigil of Holding
-BloodMagic.keybind.cycleHoldingPos=Cycle Sigil (+)
-BloodMagic.keybind.cycleHoldingNeg=Cycle Sigil (-)
+BloodMagic.keybind.open_holding=Open Sigil of Holding
+BloodMagic.keybind.cycle_holding_pos=Cycle Sigil (+)
+BloodMagic.keybind.cycle_holding_neg=Cycle Sigil (-)
 
 # JustEnoughItems
 jei.BloodMagic.recipe.altar=Blood Altar

src/main/resources/assets/bloodmagic/lang/ja_JP.lang

@@ -629,7 +629,7 @@ commands.soulnetwork.fillMax.success=正常に%sのソウルネットワーク
 commands.soulnetwork.create.success=正常に%sのソウルネットワークを構築しました(オーブのグレード： %d)
 
 # Keybinds
-BloodMagic.keybind.openSigilHolding=貯蔵の印章を開く
+BloodMagic.keybind.open_holding=貯蔵の印章を開く
 
 # JustEnoughItems
 jei.BloodMagic.recipe.altar=血の祭壇

src/main/resources/assets/bloodmagic/lang/zh_CN.lang

@@ -645,7 +645,7 @@ commands.soulnetwork.fillMax.success=成功将 %s 的灵魂网络填满至其宝
 commands.soulnetwork.create.success=创建 %s 的灵魂网络成功 (宝珠等级: %d)
 
 # Keybinds
-BloodMagic.keybind.openSigilHolding=打开集持印记
+BloodMagic.keybind.open_holding=打开集持印记
 
 # JustEnoughItems
 jei.BloodMagic.recipe.altar=血之祭坛