Fixes to the PGP Network View.

* Made Signature Arrows Red.
 * they now move around correctly too.



git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@1398 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/elastic/graphwidget.cpp

@@ -99,6 +99,7 @@ bool GraphWidget::clearGraph()
 
     nodeMap.clear();
     edgeList.clear();
+    arrowList.clear();
 
     return true;
 }