Add UnitModifier enum
Add TowerAura default action - add a modifier to units in range
Add Speed Modifier
Add proliferation modifier
Add Resistant modifier
Add Division modifier
Fix bug on tower vision list : they didn't remove dead unit
Add displaying of icon for each unit modifier
Add Tower range display
Add new attack system in TowerAttack
To starting working on Projectile
Fix bug : blinking on Tower and Base.
Fix #53
Merge branch 'master' of https://github.com/cchampet/Java_nanowars.git
Clean TowerAttack class
Add TowerDamage Effect
Update the tower vision Unit system
Set instead of List
Merge branch 'master' of https://github.com/cchampet/Java_nanowars.git
Merge branch 'master' into testMenu

Conflicts:
	src/dispatcher/Dispatcher.java
Merge branch 'master' of https://github.com/cchampet/Java_nanowars.git
Changing the menu image
Add Poison effect
Fixing PlayerSprite display bug