Add some CSS classes for Special:Ask

- smw-ask-query
- smw-ask-query-condition
- smw-ask-query-printout
- smw-ask-query-format, smw-ask-query-format-selector

In order for things to look a bit nicer than in [0]

[0] http://docs.webplatform.org/wiki/Special:Ask
Merge pull request #180 from SemanticMediaWiki/special-ask-css

Add some CSS classes for Special:Ask