Or, a product like Giveffect might be helpful.
That sounds really cool! I work with CMS's all the time and will be teaching a class on them -- is your dissertation publicly available, and/or do you have any interest in sharing or chatting about the topic? (my contact info is in my profile)
Sustainable multilingual communication: Managing multilingual content using free and open source content management systems by Kelsey, Todd, Ph.D., Illinois Institute of Technology, http://pqdtopen.proquest.com/doc/906782853.html?FMT=ABS
(Disclaimer: I work for a partner company; we've put Odoo on some of the largest companies in our country)
By the way, both Alpinter and the WWF use Odoo:
https://www.odoo.com/blog/customer-reviews-6/post/how-alpint...
https://www.odoo.com/blog/customer-reviews-6/post/how-many-e...
[1] https://apps.openerp.com/apps/modules/8.0/membership/
[2] https://apps.openerp.com/apps/modules/8.0/donation_recurring...
Things we'd need in a CMS are 1) security 2) document management and 3) knowledge base.