Added option to donate money to faction

utils/StringHelperFunctions.js

@@ -68,6 +68,11 @@ function isString(str) {
     return (typeof str === 'string' || str instanceof String);
 }
 
+//Returns true if string contains only digits (meaning it would be a positive number)
+function isPositiveNumber(str) {
+    return /^\d+$/.test(str);
+}
+
 //Returns whether an array contains entirely of string objects
 function containsAllStrings(arr) {
     return arr.every(isString);