start 3rd lesson
add button menu styles
button popup menu javascrpt
Revert "button popup menu javascrpt"

This reverts commit 15c462170b20d10851202676197735b4ecb93ca8.
Revert "Revert "button popup menu javascrpt""

This reverts commit c13444355b78e6ee0a129be4e6a4fc61fc422af7.
rm visited links colour
add jquery timeago
answered questions in readme2
implement waiting list feature
fix broken link on invoice page
end 3rd lesson