.. now has an overlay widget that can contain multiple widgets
and is user movable and resizable etc
.. we show the model derived values for now, but could add other
things at a later date (e.g. MU distribution etc).
Fixes#811.
.. fixup ride mode, interval hover crash/bugs
.. fixup interval compare mode
.. fixup rangemode
NOTE: Compare date ranges is still broken that
will be fixed in part 3.
.. basic ride, bests and model plots all working
.. Compare mode is now BROKEN !
Will fixup the rest tomorrow, needed to checkpoint
the core refactoring work.
.. the CP plot curve is a terrible mess. Mostly from
having multiple significant updates from a number
of notable developers; Sean, Dan, Mark and Damien
have all made significant contributions.
.. But the code contains lots of 'smells' and is very
difficult to follow and update
.. this update makes no functional changes but is put
in place before overhauling the code related to
"calculating" and plotting the different curves.
