remove continue from download_local

Bug exposed by a6291858cc1570e56204c4a1e7a68f76c4853336

popd doesn't run in the for loop in download_sources() if the continue
in download_files is executed. Causing the extract_files to extract
everything into $SRCDEST instead of $srcdir

Signed-off-by: Allan McRae <allan@archlinux.org>
Update translations from transifex

Signed-off-by: Allan McRae <allan@archlinux.org>
Bump to version 4.0.0

Signed-off-by: Allan McRae <allan@archlinux.org>