make some .ui strings translatable

Conflicts:
	svx/uiconfig/ui/linkwarndialog.ui

Change-Id: I3e2a93ac7521b4b484a96da22efac0b4cb52b333
mark non-translatable .ui strings explicitely as such

so bin/ui-translatable.sh will not find false positives

Change-Id: I35e98ba22ba8c0cc9bbf0de40b31be421acc4c15