re #174.
re #174.

The problem happened when you wanted to edit a sentence with unknown language. The sentence id was set as _123 (with the underscore) instead of 123. So CakePHP would consider it as non valid id, and therefore would save as a new sentence instead of updating.

git-svn-id: 776ea4b3e47339c5b8782ec5e9346c740e073fb4@851 e0e46c49-be69-4f5a-ad62-21024a331aea

hans/tatoeba2,hans/tatoeba2,hans/tatoeba2