Update engine.pl.po

Changed translation for "set"
Update german translation for engine.
Merge pull request #482 from hean01/master

Proper handle of fuzzy string translations.
Merge pull request #483 from stefanbeller/master

Add german translation
Merge pull request #481 from Pawonashi/patch-1

Update engine.pl.po
Recreate pot and po files

Although we have already string freeze, we need to recreate the
translation files again.

* These changes remove the 'Ok', instead we will only have 'OK'
  One way of spelling removes the burden of translations.

* We introduced 'Trade' as engine string. This is most often already
  translated, so it was just uncommented most of the time.
translation-de: shorten mouse button names.
Enable exit menu when transformed
Allow Character menu to be open when transformed
xgettext is utf8 safe now
Translations: Bump version number to 0.18
Merge remote-tracking branch 'mainline/master'

Conflicts:
	mods/default/languages/engine.pl.po
	mods/default/languages/xgettext.py
Update version number in pot and po files.
Updated Japanese translation for engine.ja.po.
Looks a bit weird seeing "Nihongo", "Japanese" is far more appropriate. "日本語" would be even better, but loading a larger font just for that seems a little bit of a waste.
Merge remote-tracking branch 'upstream/master' into bugfixes
Merge pull request #489 from Paul-Wortmann/master

Updated Japanese translation for engine.ja.po.
Merge pull request #486 from dorkster/bugfixes

Enable some menus when transformed
Fix flavor text for items in xgettext tool.

Fixes #492.
Merge remote-tracking branch 'mainline/master'

Conflicts:
	mods/default/languages/engine.ja.po