Simple UI improvements.

Combo box to select skill ID in skill level requirement.
Icons for most requirements types in requirements list in dialogue
editor.
More verbose description of requirement in requirement list.

src/com/gpl/rpg/atcontentstudio/model/gamedata/Requirement.java

@@ -56,9 +56,54 @@ public class Requirement extends JSONElement {
 		hasActorCondition
 	}
 	
+	public enum SkillID {
+		weaponChance
+		,weaponDmg
+		,barter
+		,dodge
+		,barkSkin
+		,moreCriticals
+		,betterCriticals
+		,speed				// Raises max ap
+		,coinfinder
+		,moreExp
+		,cleave				// +10ap on kill
+		,eater				// +1hp per kill
+		,fortitude			// +N hp per levelup
+		,evasion			// increase successful flee chance & reduce chance of monster attack
+		,regeneration		// +N hp per round
+		,lowerExploss
+		,magicfinder
+		,resistanceMental	// lowers chance to get negative active conditions by monsters (Mental like Dazed)
+		,resistancePhysical	// lowers chance to get negative active conditions by monsters (Physical Capacity like Minor fatigue)
+		,resistanceBlood	// lowers chance to get negative active conditions by monsters (Blood Disorder like Weak Poison)
+		,shadowBless
+		,crit1			// lowers atk ability
+		,crit2			// lowers def ability ,rejuvenation	// Reduces magnitudes of conditions
+		,rejuvenation	// Reduces magnitudes of conditions
+		,taunt			// Causes AP loss of attackers that miss
+		,concussion		// AC loss for monsters with (AC-BC)>N
+		,weaponProficiencyDagger
+		,weaponProficiency1hsword
+		,weaponProficiency2hsword
+		,weaponProficiencyAxe
+		,weaponProficiencyBlunt
+		,weaponProficiencyUnarmed
+		,armorProficiencyShield
+		,armorProficiencyUnarmored
+		,armorProficiencyLight
+		,armorProficiencyHeavy
+		,fightstyleDualWield
+		,fightstyle2hand
+		,fightstyleWeaponShield
+		,specializationDualWield
+		,specialization2hand
+		,specializationWeaponShield
+	}
+	
 	@Override
 	public String getDesc() {
-		return ((negated != null && negated) ? "NOT " : "")+required_obj_id+(required_value == null ? "" : ":"+required_value.toString());
+		return ((negated != null && negated) ? "NOT " : "")+(type == null ? "" : type.toString()+":")+required_obj_id+(required_value == null ? "" : ":"+required_value.toString());
 	}
 
 	@Override