[#137405759] Provide a way for Data Interactive plugins to know locale.
[#137405759] Provide a way for Data Interactive plugins to know locale.

We add a query parameter, "lang=...", to the query parameter for invoking the plugin. E.g.:

     http://ivy.concord.org/sage.html?lang=en

The language will be a digraph, and is retrieved, through Sproutcore, from the HTML "language" attribute.

concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap