Template:Test wiki/validcode

This template can give:
 * "notyetchecked" - default
 * "valid" - a valid ISO 639 language code
 * "invalid" - an invalid ISO 639 language code (i.e. will not be accepted by the langcom)
 * existing - all WMF projects exist in that language

Note that this does NOT check whether the code is the same as the actual language the test is written in.

We can copy the codes from e.g. http://www.sil.org/iso639-3/iso-639-3_20080422.tab