Regression in rendering of flowChartPunchedTape custom shape

Regression from:
20f8006e21943b08f1f152e4a0359c9ebe4786f2

It's not a good idea to create the arc first in small
resolution and scale it later, because the result won't
be smooth (e.g. in case of flowChartPunchedTape).

Both cloud and flowChartPunchedTape rendered well after
that change. It seems the problem in case of cloud
was with the arc tangent values which should be calculated
based on the ARCANGLETO's original values before scaling.

Change-Id: I0315afd0452108b6539b4b8ba271d1615810d985
fdo#87754: duplicated strings in an ItemList are not translated

Change-Id: I72c6e234ff999a6dbed48cc62fe7d39aeb798f35