Fallback for concept messages

If fallback messages aren't set up, then the raw messages from the <int:xxx> strings will be seen.

To solve this, make a MediaWiki:xxx page for each of the strings found in MediaWiki:Project-form-concept and MediaWiki:Project-page-concept and write the fallback message that you would like to see.

Here is an example: MediaWiki:Ttp-page-concept-definition