.. run through the entire code base looking for calls to
setColumnWidth, resizeColumns, setFixedSize and replace
with calls that apply dpiXFactor/dpiYFactor
.. added to DataFilter XDATA_UNITS("..", "...") returns the units as
a string.
.. added to the various dialogs in RideEditor, to enable units and
series name to be set and edited by the user.
.. add XDataDialog and tabs to the ride editor, so you can
add and remove xdata and the individual data series.
.. next commit will add editing of the xdata values.
