After the previous change of showing all the sponsored uploads, the page
has become large and is now quite hard to read and browse.
This change will add the package list in a collapsible <div> which can
be expanded/collapsed as needed.

While doing it add the missing </body> and </html>.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>