Fix column chooser in activity log
Translation DE - Update

... more translations / following latest code changes
Merge pull request #932 from Joern-R/pull-l1

Translation DE - Update
Add Temperature to Season Summary

.. if it is available, like we do for ride summary
Tooltip Color

.. changed from yellow to light gray to be more theme
   neutral and align with the colors across the rest
   of the base gc colors.
Fix LTMCanvasPicker SEGV on delete tab

.. not always, but sometimes !
Merge remote-tracking branch 'upstream/master'