First attempt at #142. Needs a lot of work still.

public/js/ff/firefly.js

@@ -98,3 +98,18 @@ function currencySelect(e) {
     return false;
 }
 
+// Settings object that controls default parameters for library methods:
+accounting.settings = {
+    currency: {
+        symbol: currencySymbol,   // default currency symbol is '$'
+        format: "%s %v", // controls output: %s = symbol, %v = value/number (can be object: see below)
+        decimal: mon_decimal_point,  // decimal point separator
+        thousand: mon_thousands_sep,  // thousands separator
+        precision: frac_digits   // decimal places
+    },
+    number: {
+        precision: 0,  // default precision on numbers is 0
+        thousand: ",",
+        decimal: "."
+    }
+};