Merge changes from origin/7.1

9c29442 Replace SelectionRangeDragging TB2 test with TB3 test
9fa230d Avoid eagerly layouting from VScrollTable.updateFromUIDL (#13188)

Change-Id: I4f1395a13e8b1eae44a0030a3679475a3db9160a

diff --cc client/src/com/vaadin/client/ui/VScrollTable.java
Simple merge

diff --cc client/src/com/vaadin/client/ui/treetable/TreeTableConnector.java
Simple merge

diff --cc client/src/com/vaadin/client/ui/window/WindowConnector.java
Simple merge