Align last temperature text end of temperature plot line

The temperature plot line was drawn to the end of the dive, but the last
temperature plot text was printed near the last temperature *sample*.

This was most visible on dives/test27.xml where two "20˚C" were
printed on top of each other at the start of the dive, while nothing
was printed at the end.

Signed-off-by: Henrik Brautaset Aronsen <subsurface@henrik.synth.no>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Yet another Norwegian translation update

This time with " begin" and " end"

Signed-off-by: Henrik Brautaset Aronsen <subsurface@henrik.synth.no>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>