Implemented text field functionality

Character text fields now work. Slightly modified versions will be needed for Spells, features, etc.

rpg-docs/Model/Utility/evaluateString.js

@@ -0,0 +1,36 @@
+evaluate = function(character, string){
+	string = string.replace(/\b[a-z]+\b/g, function(sub){
+		//skill mods
+		if(character.skills[sub]){
+			return +character.skillMod(character.skills[sub]);
+		}
+		//attributes
+		if(character.attributes[sub]){
+			return +character.attributeValue(character.attributes[sub]);
+		}
+		return sub;
+	});
+	try{
+		result = math.eval(string);
+		return result
+	} catch(e){
+		console.log(e)
+		return string;
+	}	
+}
+
+evaluateString = function(character, string){
+	//define brackets as curly brackets around anything that isn't a curly bracket
+	var brackets = /\{[^\{\}]*\}/g;
+	var result = string.replace(brackets, function(exp){
+		var exp = exp.replace(/(\{|\})/g, "") //remove brackets
+		var span = jQuery('<span/>', {
+			title: exp,
+			text: evaluate(character, exp),
+			class: "calculatedValue"
+		});
+		return span.prop('outerHTML');
+	});
+	//this is going to return HTML, ensure it is santized!
+	return result;
+}