Merge pull request #893 from Joern-R/pull

Avoid Dump in Merge Activity Wizard
Fixup Fix for MergeActivityWizard crash

.. TRUE/FALSE are case sensitive on Mac
.. ride2Loaded renamed ridesLoaded
.. ridesLoaded initialisation moved to constructor

Thanks to Jorn for the fix to a P0 bug !
Remove unneeded bool in MergeWizard

.. use the pointer to the loaded ride instead
.. but also make sure it gets initialised too !
Another Scrollbar ..

.. AllPlot IntervalSummary overlay needs its
   scrollbar styled.
2
Translation: Update for 3.1
Fixup Metadata Styling on Linux

.. by using the Fusion style on the widgets
Translation Enablement + Check on temporary Seasons

... Translation for Season Types
... Do not allow Temporary Seasons to be edited or deleted through the
main seasons menu (in right click Popup this was already blocked by not
offering the function)

(cherry picked from commit cc7a0a7f8d0b74ca4b9d64d61291206ea58d3f94)