Source code maintenance

Memory leaks:
- PeersDialog::insertPeers -> takeTopLevelItem, takeChild

- activate correct page on creating a new forum or channel from PeersDialog (problems with RS_RELEASE_VERSION)
  new static method to activate a page MainWindow::activatePage

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@2842 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/ForumsDialog.cpp

@@ -1289,6 +1289,8 @@ void ForumsDialog::replytomessage()
         nMsgDialog->addRecipient( msgInfo.srcId ) ;
         nMsgDialog->show();
         nMsgDialog->activateWindow();
+
+        /* window will destroy itself! */
     }
     else
     {