Don't show R test files

Author: nygrenh

app/models/source_file_list.rb

@@ -130,7 +130,7 @@ def self.source_file?(file)
         name.end_with?('.hpp') ||
         name.end_with?('.h') ||
         name.end_with?('.rb') ||
-        name.end_with?('.R') ||
+        (dir.include?('/R') && name.end_with?('.R')) ||
         (dir.include?('/src') && name.end_with?('.py')) ||
         dir.include?('/WEB-INF')
     end