Ability to manually cast abilities (a step in the final direction)

Hi again,

today i added the ability to manually cast abilities from heros.

Why is this important?

This allows you to add combos between spells (that still have to be intoduced to be fair), which adds ton of depths to the game.

Simple combos will for example be: Throw oil with you E-ability, ignite it with your Q.  While these combos were already implemented , I removed them since they weren't fun. I will add them again in the future.

For now you can see this a step in the right direction (+: It gets the dopamine going when launching AOE spells manually. Try it out!).