Converting 4.2.x themes to 4.3.x

No changes are required :)

A few more CSS classes are available to you if you wish to use them. A non-exhaustive list is

• read-more: affects the formatting of the 'read more' link
• cell-highlight: affects the cell in the table header which is currently the sort key. this cell also has an image which you can override in your theme->image directory (most images are overridable in this way).