Multiple changes:

- game: fixed possible empty pay text in custom costs;
- debug: improved debug info for CardInfo objects;
- db: removed unused split sides from cards database;
- db: fixed constant cards adding on each cards database scan (e.g. on tests start);

Mage/src/main/java/mage/abilities/costs/mana/ManaCostsImpl.java

@@ -42,6 +42,7 @@ public class ManaCostsImpl<T extends ManaCost> extends ArrayList<T> implements M
 
     public ManaCostsImpl(final ManaCostsImpl<T> costs) {
         this.id = costs.id;
+        this.text = costs.text;
         for (T cost : costs) {
             this.add(cost.copy());
         }