Resolves: rhbz#868479 / fdo#56281 doubled ~ in German ok/cancel translations
Resolves: rhbz#868479 / fdo#56281 doubled ~ in German ok/cancel translations

We have unix-specific code adding ~ to OK/Cancel. So don't add ~ if
string already contains those.

Though its an open question if the presence of ~ is a bad thing
for the Windows case. i.e. if we should have tooling to not
allow the OK/Cancel translations to contain ~ in the first place,
of if we should drop the ifdef UNX and do it globally now

Change-Id: I461c6ac9ca574ed188f51472919be82ec582e389

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core