Print preview works. Working on the damn Credits box.

Signed-off-by: Melissa Avery-Weir <melissa.avery@wellsfargo.com>

d20 SRD Spell Lists/Models/Character.cs

@@ -97,6 +97,11 @@ namespace d20_SRD_Spell_Lists.Models {
 
         public void addAllClassSpells() {
             Spells.AddRange(new MasterSpellSet().byClass(CharacterClass));
+            Spells.Sort(new SpellInequalityComparer());
+        }
+
+        public string SpellCastingAttributeModAsString() {
+            return String.Format((SpellCastingAttributeMod >= 0) ? "+{0:D}" : "{0:D}", SpellCastingAttributeMod);
         }
     }
 }