Reinstate show() for new charts in tile mode

.. was removed due to a crash on beta versions of QT5
   but appears to work fine with QT 5.3.0, so reinstated!

Fixes #910
Bikescore (TM) unique handling all languages & Translation Enablement

... sync handling of (TM) in all places and Do Not allow translation for
these terms any more, since it's a fixed term anyway - and there are
many dependencies (which outside EN create unexpected results). - in all
Texts/Fields use (TM) in HTML use the TM (special characters).

-- more testing in language other then EN still required - but so far
working fine

... and more tr()
Merge pull request #911 from Joern-R/pull1

Bikescore (TM) unique handling all languages & Translation Enablement
Fix Map redisplay QT4.8 and Windows

.. webbridge gets stuck and we delete and recreate
   it to reset for a new map display.

   Seems to be a bug in webkit ...
Fixup interval select in Maps

.. deleting things removed signal/slot connections !
Less precsision on W' J/KG

.. missed off for ranges on RideSummary
Merge remote-tracking branch 'upstream/master'