formatting and typo fix

In cases where the override function is used for actual users, not just
testing/overriding, it makes sense to not run the regular expressions.

Reported by: Sergey Syrota

Thanks to Sergey Syrota for pointing this out.

Thanks to Sergey Syrota for pointing this out.

Observed user-agent was:

User-Agent: Mozilla/5.0 (compatible; JikeSpider; +http://shoulu.jike.com/spider.html)

googlebot for mobile has "iphone" in ua-string. move thing a bit to match that first. This is why U-As are no fun