Reading/Web/Projects/Lead Paragraph Move

Problem
Infoboxes on the mobile website can make difficult for readers to reach the content they are looking for. Unlike the desktop website, where infoboxes have secondary placement to article text, they appear in a primary position on the mobile web, prior to the beginning of the article content. If an article is on an unknown topic to a user, sometime they have to scroll through the entire infobox to confirm that they are reading their intended article.

Proposal
Moving the lead section of the article prior to the infobox. Our goal for this change is to:
 * Allow readers to confirm they are reading the correct article
 * Give article text primary placement on the page, in consistency with the desktop website
 * Give an overview of the topic with content from the lead paragraph prior to exposing details on the topic

Exceptions:

 * Articles which begin with a list, such as the Planet article - for these cases, the list is considered as the lead and presented prior to the infobox
 * Articles with no infobox - no changes observed
 * Articles with images prior to article text - no changes observed

Related Phabricator Tasks

 * Improve top of the article user experience
 * Move first paragraph above infobox template on small screens
 * Move first paragraph before infobox on stable