translation-de: Shorten mouse button descriptions for the actionbar
Merge remote-tracking branch 'mainline/master' into translation_de
Move commands from recreate_all_languages.sh to readme.txt
Remove no-fuzzy matching from the fantasycore readme.
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.
alpha_demo: remove recreate_all_language script
alpha_demo: replace readme link by actual file.

It helps to have no links, when on windows.
set polish translations to utf-8
Regenerate the pot and po files for fantasycore and alpha_demo
translation-de: work on fantasycore data.
Sync xgettext.py in mods with engine default version
xgettext has proper utf8 handling now.
Regenerate pot and po files with utf-8 safe xgettext now.
xgettext is utf8 safe now
Martigan learns to speak german correctly
Shorten strings in german translation
german translation: replace Unterschlupf by Quartier
german translation: Rename Stoffoberteil to Stoffhemd
Translations: Bump version number to 0.18