Fix changelog display on plugin/theme pages

The product pages for WPMUDEV published themes and plugins includes a changelog (which is critical), but it's in two parts. Please tie these together so that it's possible to see a more complete changelog with a single click - not having to toggle between them.

Here's an example page:

The 'log' icon next to the version number shows only the current version changes. The 'older versions/changelog' link HIDES that changelog and shows only the older stuff. Please unify this group and show it all.