Issues with connectivity check with some components (e.g. Jumper) where

the middle of the component was considered as a connected point

diylc/diylc-library/src/org/diylc/components/connectivity/HookupWire.java

@@ -136,6 +136,6 @@ public class HookupWire extends AbstractCurvedComponent<Void> implements IContin
 
   @Override
   public boolean arePointsConnected(int index1, int index2) {
-    return Math.abs(index1 - index2) == getControlPointCount() - 1;
+    return index1 <= 1 && index2 <= 1;
   }  
 }

diylc/diylc-library/src/org/diylc/components/connectivity/Jumper.java

@@ -161,7 +161,7 @@ public class Jumper extends AbstractLeadedComponent<Void> implements IContinuity
 
   @Override
   public boolean arePointsConnected(int index1, int index2) {
-    return true;
+    return index1 <= 1 && index2 <= 1;
   }  
   
   public boolean getMoveLabel() {

diylc/diylc-library/src/org/diylc/components/connectivity/TwistedWire.java

@@ -436,6 +436,6 @@ public class TwistedWire extends AbstractCurvedComponent<Void> implements IConti
   
   @Override
   public boolean arePointsConnected(int index1, int index2) {
-    return Math.abs(index1 - index2) == getControlPointCount() - 1;
-  }  
+    return index1 <= 1 && index2 <= 1;
+  } 
 }