Server Logic for Abilities

[Humungus-Fungus]

• Triggering abilities is now clientside (no server calls). This is only for the gui/aiming reticle for the ability.
• Casting abilities remains serverside.
• Abilities now appear on the screen of non-server clients as well.
• Fixed minor bugs involving mana being used up even when an ability is on cooldown and incorrect abilities being on cooldown.