Support URL by match type

UPDATE 2015-08-25 seems like we don't need this because it's from 2012 and now there are Upgraded URLs.

• http://advertise.bingads.microsoft.com/en-us/blog/26991/coming-soon-unique-landing-pages-by-match-type-in-bing-ads-ppc-sem-advertising
• https://support.google.com/ds/answer/2722974?hl=en

We need to add support for URL by match type. This support probably needs to be optional (based on region) because not all regions currently use URL by match type.

This was implemented in Agency for SearchEngineUpdater and SearchEngineSummarizer (in MSNAPISearchEngine) because it is required in the US but not implemented in Yell because it is not used in the UK.