Added constructors where needed.
Merge branch 'master' of https://github.com/DaWaaaaghBabal/CavesEtVarans

Conflicts:
	Assets/src/main/csharp/edu/caves/skills/SkillCondition.cs
Beginning of the integration with the Unity world.
Merge branch 'master' of https://github.com/DaWaaaaghBabal/CavesEtVarans
Advancement on graphics integration.