Transifex connection, added French and part of Bulgarian

.tx/config

admin/l10n/da.php

admin/l10n/de.php

admin/l10n/fr.php

admin/l10n/nl.php

admin/l10n/pl.php

core/l10n/bg_BG.php

core/l10n/da.php

core/l10n/de.php

core/l10n/fr.php

core/l10n/nl.php

core/l10n/pl.php

files/templates/part.list.php

help/l10n/bg_BG.php

help/l10n/fr.php

l10n/bg_BG/core.po

l10n/bg_BG/help.po

l10n/bg_BG/log.po

l10n/bg_BG/settings.po

l10n/da/admin.po