Merge remote branch 'origin/6.8'

Merge remote branch 'origin/6.8'

Conflicts:
	src/com/vaadin/terminal/gwt/client/ApplicationConnection.java
	src/com/vaadin/terminal/gwt/client/HistoryImplIEVaadin.java
	src/com/vaadin/terminal/gwt/client/Util.java
	src/com/vaadin/terminal/gwt/client/ui/FocusableScrollPanel.java
	src/com/vaadin/terminal/gwt/client/ui/UploadIFrameOnloadStrategy.java
	src/com/vaadin/terminal/gwt/client/ui/UploadIFrameOnloadStrategyIE.java
	src/com/vaadin/terminal/gwt/client/ui/VCustomLayout.java
	src/com/vaadin/terminal/gwt/client/ui/VDragAndDropWrapper.java
	src/com/vaadin/terminal/gwt/client/ui/VDragAndDropWrapperIE.java
	src/com/vaadin/terminal/gwt/client/ui/VScrollTable.java
	src/com/vaadin/terminal/gwt/client/ui/VTabsheet.java
	src/com/vaadin/terminal/gwt/client/ui/VTextField.java
	src/com/vaadin/terminal/gwt/client/ui/VVideo.java
	src/com/vaadin/terminal/gwt/server/AbstractApplicationPortlet.java
	src/com/vaadin/terminal/gwt/server/AbstractApplicationServlet.java
	src/com/vaadin/terminal/gwt/server/AbstractCommunicationManager.java
	tests/testbench/com/vaadin/tests/components/table/TestCurrentPageFirstItem.java