PIVOT-946: Add the enclosing TablePane / TableView to the constituent Row/Column constructors.
This makes user code simpler by doing the addition to the row/column sequence as part of the
constructor, instead of needing a separate call.  The actual code that is executed is identical
but the user code is smaller.

Apply this simplification to our internal and example code also.

Also make a GridPane.Row constructor with the GridPane as parameter as well.  But, principally
apply to TablePane.Row, TablePane.Column and TableView.Column.


git-svn-id: https://svn.apache.org/repos/asf/pivot/trunk@1589010 13f79535-47bb-0310-9956-ffa450edef68