- Removed all usages of the old windows icon (rstray3.png) and used the standard icon of the application

- Added possibility to change the icon of the GxsGroupDialog

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7471 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/msgs/MessageWidget.cpp

@@ -333,7 +333,6 @@ void MessageWidget::getcurrentrecommended()
 
 		if (rsFiles->FileRequest(fi.fname, fi.hash, fi.size, "", RS_FILE_REQ_ANONYMOUS_ROUTING, srcIds) == false) {
 			QMessageBox mb(QObject::tr("File Request canceled"), QObject::tr("The following has not been added to your download list, because you already have it:\n    ") + QString::fromUtf8(fi.fname.c_str()), QMessageBox::Critical, QMessageBox::Ok, 0, 0);
-			mb.setWindowIcon(QIcon(QString::fromUtf8(":/images/rstray3.png")));
 			mb.exec();
 		}
 	}

retroshare-gui/src/gui/msgs/MessageWidget.ui

@@ -10,10 +10,6 @@
     <height>539</height>
    </rect>
   </property>
-  <property name="windowIcon">
-   <iconset resource="../images.qrc">
-    <normaloff>:/images/rstray3.png</normaloff>:/images/rstray3.png</iconset>
-  </property>
   <layout class="QGridLayout" name="gridLayout">
    <property name="leftMargin">
     <number>0</number>

retroshare-gui/src/gui/msgs/MessageWindow.ui

@@ -10,10 +10,6 @@
     <height>539</height>
    </rect>
   </property>
-  <property name="windowIcon">
-   <iconset resource="../images.qrc">
-    <normaloff>:/images/rstray3.png</normaloff>:/images/rstray3.png</iconset>
-  </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QGridLayout" name="gridLayout">
     <property name="verticalSpacing">