Deleted the embedded technical documentation

Fixed the duration of spells

Translated javadoc to english

Renamed 2 methods in  fr.ritaly.dungeonmaster.map.Element

Translated javadoc to english

Renamed class fr.ritaly.dungeonmaster.SubCell into Sector

Added empty files package-info.java to document packages

Renamed interface fr.ritaly.dungeonmaster.actuator.Triggered into Triggerable

Simplified code

New abstract class fr.ritaly.dungeonmaster.map.FloorTile

Merged class fr.ritaly.dungeonmaster.map.OrientedElement into fr.ritaly.dungeonmaster.map.Door

New class fr.ritaly.dungeonmaster.map.ItemManager