Change Details

We should add a page header to the mobile-html output. This could be done in a `HeaderTransform` in the #wikimedia-page-library, similarly to what has been done for the `FooterTransform`. First phase: [x] Initially we may want to consider moving the content into it's own content element, instead of marking `<body>` as with the `content` class. [x] Add title [x] Add description if present [x] Add page image Further improvements: [x] If there is a title pronunciation add a speaker icon button to play the title pronunciation. [x] If description editing is allowed [x] and no description exists add link to add description [x] and description exists lead section edit pencil opens native popup to edit description or lead section