Eliminate XmlAdsApi from JobsApi
Eliminate XmlAdsApi from BestsellersApi
Eliminate XmlAdsApi from MortgageApi
Eliminate XmlAdsApi from TravelOffersApi
Eliminate XmlAdsApi from MoneySupermarketApi
Eliminate XmlAdsApi
Refactor FeedReader

Added extra convenience functions.
Inline XML Parsing Functions
Merge pull request #5977 from guardian/kc-refactor-reads

Refactor Commercial Component Feed Reading