fix single solar cell max capacity (#99)

src/main/java/crazypants/enderio/machine/solar/SolarPanelNetwork.java

@@ -18,6 +18,7 @@ public class SolarPanelNetwork {
     private boolean empty = true;
 
     private EnergyStorage energy;
+    private boolean hasAppliedMaxEnergyConfig = false;
 
     public static final int ENERGY_PER = 10000;
 
@@ -96,7 +97,7 @@ public class SolarPanelNetwork {
         return capacity;
     }
 
-    private static int getCapacity(TileEntitySolarPanel panel, int panelsCount) {
+    private int getCapacity(TileEntitySolarPanel panel, int panelsCount) {
         int capacity = ENERGY_PER;
 
         if (panel != null && panel.hasWorldObj()) {
@@ -112,6 +113,7 @@ public class SolarPanelNetwork {
                     capacity = Config.photovoltaicVibrantCellCapacityRF;
                     break;
             }
+            hasAppliedMaxEnergyConfig = true;
         }
 
         capacity = capacity * panelsCount;
@@ -119,6 +121,12 @@ public class SolarPanelNetwork {
         return capacity;
     }
 
+    private void updateEnergyIfNeeded() {
+        if (!hasAppliedMaxEnergyConfig) {
+            updateEnergy();
+        }
+    }
+
     private void updateEnergy() {
         energy.setCapacity(getCapacity());
         energy.setMaxExtract(energy.getMaxEnergyStored());
@@ -155,6 +163,7 @@ public class SolarPanelNetwork {
     }
 
     public int setEnergyStored(int energy) {
+        updateEnergyIfNeeded();
         if (isValid()) {
             this.energy.setEnergyStored(energy);
         }