Refactored to use a word count method instead of nth paragraph
Updated test fixture
Insert ads below paragraphs at the mobile breakpoint
Removed the ability to position ads on the left of articles
Refactored to add functionality to render an ad at the top of an article
Added comments and changed parameter names
Reseting the inline ad count when the ads are destroyed
Added hack to get the word count when it's not set correctly
Merge conflict
Merge pull request #2879 from guardian/refactor-ad-placement-logic

Refactor ad placement logic