UI Nits: Defaut sidebar settings

When a new athlete is created or when running v3 for the first
time for this user the sidebars shown are yucky. This just updates
the settings to make sure you start up with a simple sidebar for
the four views.
Fix WPK interval metric crash

.. recent update to use getWeight() in the ride file
caused a SEGV as interval metric computation is done
on the fly against a 'manufactured' ride file.

.. That ridefile doesn't have a mainwindow reference in
it, so when getWeight() references mainwindow->metricDB
a SEGV occurred.
Ready to publish v3.0-RC5X

.. updated version string.
Clean up measures.xml

.. remove it as part of the upgrade.
.. use built-in version for db schema
.. don't re-read it when doing getAllMeasuresFor()
Updated translations
Italian by Marco Piccirilli
Japanese by Okano Takayoshi
Merge pull request #610 from amtriathlon/master

Updated Translations
More WPK interval SEGV fixing

.. in interval summary
.. and workout wizard

There aren't any other computeMetrics() pieces of code
left. I also scanned for new RideFile() code and it was
limited to the RideFileReaders which are managed by the
openRideFile() base method, so all should now be well.
Merge branch 'master' of github.com:/GoldenCheetah/GoldenCheetah