Include the Phyrexian mana display. Include more features in modrules.xml: Now is possible to change font color, Size. Include icon tag. Is possible select position to show the icon, size and where the image is stored

<item name="icon">
 <position x="0" y="25"/>
 <iconposition x="1" y="2"/> 
 <filename>menuicons.png</filename> 
 <sizeicon>5<sizeicon>
</item>
Issue: 663

projects/mtg/src/ManaCost.cpp

@@ -510,6 +510,17 @@ ManaCostHybrid * ManaCost::getHybridCost(unsigned int i)
     return &hybrids[i];
 }
 
+ExtraCost * ManaCost::getExtraCost(unsigned int i)
+{
+    if(extraCosts && extraCosts->costs.size())
+	{
+        if (extraCosts->costs.size() <= i)
+            return NULL;
+        return extraCosts->costs[i];
+    }
+    return NULL;
+}
+
 int ManaCost::hasColor(int color)
 {
     if (getCost(color))