Add a note on recycling of delegates for TableView
Add a note on recycling of delegates for TableView

Since this is a new feature in 5.3, we should clearly document
the implication this will have on delegates.

Change-Id: I2255e9306bbac503c38d79586b4cac4eb5c8ba1e
Reviewed-by: J-P Nurmi <b84a892f57a298bb5dae653b4e188948a84d5549@digia.com>

mizukusak/qtquickcontrols,mizukusak/qtquickcontrols,mizukusak/qtquickcontrols