Add chinese/spanish support and simplify content fields

There is now just one!
Merge branch 'add-multi-lang-content-support'
Add indexes related to 0272a8d
No need to index category, since they are easier to browse

Also breaking search indexing in relation to guide steps
Remove indexing guide steps for now, they are too different from articles
Display keywords correctly
This is unnecessary and breaking non-english search
Page renders now when there's a category description
This is not helping, searchify should take care of this. I'm removing.
Update ruby 1.9.3 patch level to 547