Add new Russian translation.
Update the Polish translation.
Add count of how many po translations we have in msg-stats.
Current translation statistics with this patch:
ipa.pot has 133 messages. There are 5 po translation files.
bn_IN: 14/133 10.5% 106 po untranslated, 13 missing, 119 untranslated
id: 107/133 80.5% 13 po untranslated, 13 missing, 26 untranslated
kn: 4/133 3.0% 116 po untranslated, 13 missing, 129 untranslated
pl: 133/133 100.0% 0 po untranslated, 0 missing, 0 untranslated
ru: 120/133 90.2% 0 po untranslated, 13 missing, 13 untranslated
Add 3 new translations for Polish, Indonesian, Kannada.
Remove the dummy Italian translation (it.po), it's only purpose was to
have some translation in the tarball so %{find_lang} wouldn't fail.
Add a new file contributing_translators.txt so we can track our
translators contributions and give them credit.
