Merge pull request #1150 from amtriathlon/master

Add pace to tooltip in CV chart
Hide tooltip in CPPlot

.. when not hovering over a curve, this worked ok for power
   but not for anything else. Because the signal was ignored
   when not showing power in pointHover.
Add .qmake.stash to .gitignore

.. just to keep git status honest
Ignore Moxy 'delimeters'

.. the Moxy device sends blank lines to delimit recordings
   that we try and parse; so now we just ignore them.
More CP tooltip

.. model curve is null when not shown, so better
   check before ignoring the tooltip update
Moxy sleep wait for clear to complete

.. give it a chance to clear before trying to exit
   engineering mode.