Updated Czech translation
Merge pull request #87 from khagaroth/stable

Update Czech translation.
Merge pull request #86 from Hyllegaard/stable

Update Danish translation.
Fix permissions of sr.po.

Not executable.
Use per-version distrib directory in InnoSetup too.

Continues 994a7f3d7a43bd80ae41a5eb4503e7fde69b77a4.
Update Inno Setup to 5.5.5.