The detail instruction is available in the horizon developer documentation
since Oct 2014
(after https://review.openstack.org/#/c/126169/ was merged).
One year passed from then. I think we can close the bug.
** Changed in: openstack-i18n
Status: New => Fix Released
** Changed in: opensta
Horizon developer doc will cover the installation step including how to
compile message catalogs.
https://review.openstack.org/#/c/126169/
The draft version of the document is here:
http://docs-draft.openstack.org/69/126169/3/check/gate-horizon-docs/ab7c3c3/doc/build/html/topics/install.html
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