Fix Metric/Imperial - conversion issues

In LTM Plot and on Summary Windows conversion
... data already converted for the curves was converted again
... for "Best" Summary the conversion was missing

Referring to issues #1067 #1071 (see also comments on issue #1069
Merge pull request #1145 from chet0xhenry/master

Synchronize Writes to JSON file in Ride Logger
Fix CyclingAnalytics upload

.. bit of a hacky fix, but practical enough.
Added pace to tooltip for speed histogram
Except when we know the activity is not a Run
Merge pull request #1146 from amtriathlon/master

Added pace to tooltip for speed histogram
Fix pace units in tool tip for non metric units
Merge pull request #1148 from jonbev/fix-pace-units-in-tooltip

Fix pace units in tool tip for non metric units
Split summary table into rides and runs

Might be nice to have a different metric set for rides and runs but a
bit beyond me at the moment.
Merge pull request #1149 from jonbev/separate-run-summary-table

Split summary table into rides and runs
Merge pull request #1137 from Joern-R/conversion

Fix Metric/Imperial - conversion issues
Add pace to tooltip in CV chart
Fixed units selection in histogram tooltip, it is independent of pace units
NB: CV chart currently doesn't obey units setting for speed, it is fixed to kph
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.
Fix PaceZone crash in PowerHist

.. cut and paste error
Fixed pace histogram shading when there is no Pace Zones defined
Merge pull request #1151 from amtriathlon/master

Fixed pace histogram shading when there is no Pace Zones defined