Updated Fireball Code

- fireball shoots off to the right of the screen, no directional movement for now
Updated UI Root
- ArenaSpawnManager has fireball prefab
- LordsScreen prefab, FireballButton has LordFireball prefab
- LordSpawnManager has LordFireball prefab
Created Warning before powers spawn.

	- Code inside ArenaManager
Commented out Fireball debug statement.
Merge branch 'master' of https://github.com/RobbSteel/Lords-of-Distortion

Conflicts:
	Lords-of-Distortion/Assets/Scenes/ArenaOne.unity
	Lords-of-Distortion/Assets/Scenes/MainMenu.unity
Removed File
Revert "Removed File"

This reverts commit 0e6b2b4b6bcff3fa2f72b4c6d453e194dc7c5fd0.