Issue #190:
When using silme for string extraction, don't stop the script on errors as it prevents closing properly the php array and the tmx file, instead just skip the string and keep on indexing the repo.
Merge pull request #191 from mozfr/Issue190-ignore-non-utf8-strings-during-extraction

Issue #190:
Issue #26: add support to lang files and www.mozilla.org
Merge pull request #192 from mozfr/MOZLANG_support

Issue #26: add support to lang files and www.mozilla.org