Show any connection error on network info page

res/layout/fragment_network_info.xml

@@ -48,4 +48,9 @@
         android:layout_height="wrap_content"
         android:text="0" />
 
+    <TextView
+        android:id="@+id/error"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" />
+
 </LinearLayout>

src/i2p/bote/android/NetworkInfoFragment.java

@@ -44,5 +44,9 @@ public class NetworkInfoFragment extends Fragment {
         Collection<BannedPeer> bannedPeers = I2PBote.getInstance().getBannedPeers();
         ((TextView) view.findViewById(R.id.banned_peers)).setText(
                 "" + bannedPeers.size());
+
+        Exception e = I2PBote.getInstance().getConnectError();
+        if (e != null)
+            ((TextView) view.findViewById(R.id.error)).setText(e.toString());
     }
 }