Fix indentation.
Add unescape() and unescape all strings returned to caller.
Update engine.fr.po
Disable error messages, which are meaningless for 0.18.
Merge pull request #537 from stefanbeller/noerrors

Disable error messages, which are meaningless for 0.18.
Merge pull request #536 from cjsthompson/master

Update engine.fr.po
Merge pull request #534 from hean01/master

Added unescape functionality to MessageEngine.
Merge pull request #540 from dorkster/bugfixes

Don't activate passives during transformation process
Belarussian translation by Mikhail Karalevich
Finnish translation by Timo Sievanen