Language for documentations links does not appear to be consistent on http://www.doctrine-project.org/

The links presented to the online documentation on http://www.doctrine-project.org/ do not appear to be consistent with regard to language. For example, I am being presented with http://www.doctrine-project.org/documentation/manual/1_1/ru/introduction, which would imply Russian and not English (though the site displays in English like I expect it to anyways). Roman (romanb) also noticed some inconsistencies:

From IRC (I've removed irrelevant parts of the IRC chat to ease readability):

<subzero2000> Question regarding the following URL from the documentation: http://www.doctrine-project.org/documentation/manual/1_1/ru/configuration#identifier-quoting after manual/1_1, what does the ru signify?
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<romanb> the language? but as there is no russian translation yet, it falls back to english I suppose
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<subzero2000> I'm curious if it's language, because that would imply to me Russian, which I neither read, write, or speak at all. I just happened to notice it, and was wondering why it seems to be defaulting to ru with no apparent way to select the language, if that's what it is?
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<subzero2000> If that's a web site "problem", is there a way of opening bugs for it, as I don't really think the default should be Russian (no offense to any of our Russian friends is intended).
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<subzero2000> And by changing ru to en, the documentation on the site still renders properly, so I assume it's a language switch of some sort.
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<romanb> subzero2000, for me the default for the documentation seems to be different. for 1.0 it is ru, for 1.1 en, for 1.2 ru and for 2.0 en. pretty strange
<subzero2000> romanb: Want me to see if I can open a bug for it in Trac?
<romanb> I think its not even consistent as I click around it changes every now and then
<romanb> subzero2000, http://doctrine-project.org/jira
<subzero2000> I didn't try the different versions, but for me 1.1 seems to default to wanting to use ru, and not en.

While I've not personally tested this, it appears to affect documentation for all versions, and as such also affects Doctrine 2 as well.