[REVIEW 3-6][REVIEW 3-6-0] fdo#52232 Hidden MediaWiki options page

[Stephan Bergmann]

This is a little embarrassing, but I just noticed that the simplified 
C++ configuration access, introduced into master towards LO 3.6, breaks 
down on localized configuration properties.

The result is <https://bugs.freedesktop.org/show_bug.cgi?id=52232> 
"Hidden MediaWiki options page" and the only easy fix I came up with is 
<http://cgit.freedesktop.org/libreoffice/core/commit/?id=aebf5bf22304c73e121b16dc0b51f909c5f34c28> 
"fdo#52232 ConfigurationSet wrapper unusable for localized properties." 
  It bluntly reverts the adaption of the affected code to the simplified 
C++ configuration access.

That should be enough for libreoffice-3-6 and libreoffice-3-6-0 (please 
review and cherry-pick accordingly, folks).  For current master, I'll go 
back to the drawing board...

Stephan