Fix AttributeError in MetaInfo class

[JureBl]

What GitHub issue does this PR apply to?

BUG: Go's queues/stacks fails #689

What changed and why?

Fix AttributeError in MetaInfo class

Replace incorrect 'self.language_friendly_name(language_key)' with 'self.language_name(language_key)' in the load_languages method of the MetaInfo class.

(If editing Django app) Please add screenshots

Checklist

• I claimed any associated issue(s) and they are not someone else's
• I have looked at documentation to ensure I made any revisions correctly
• I tested my changes locally to ensure they work
• (If editing Django) I have added or edited any appropriate unit tests for my changes

Any additional comments or things to be aware of while reviewing?

[geekygirlsarah]

I made the review app https://codethesaurus-test-pr-690.herokuapp.com . Go's queues/stacks aren't listed. Are there other good ways to test this?

Also could unit tests be added to this somehow to verify it's proper working order?

[JureBl]

    def test_language_bad_key_and_lang_exists(self):
        """test Language behaviour with bad language key"""
        language = self.dummy_language

        self.assertEqual(bool(language), False)
        self.assertRaises(FileNotFoundError,
                          language.load_concepts,  "notastructure", "notaversion")

I think that is already testing a language that is not listed. Or for what case do you need a Unit-test? Also I am not very familiar with Unit-tests :)

[geekygirlsarah]

Yeah, but the test apparently didn't check something because we were getting 500 server errors. If you're not familiar with them, maybe I'll see if I can add a test soon.

I'll go ahead and merge this in.