* refactor out the common menu code from several base*.html classes into main-menu.html
and put the raw links into a unordered list (which makes it easier to create dynamic
menus as we cannot insert block items into inline items in strict mode)
* query the list of available projects on every request and set them for every template
in Middleware.php
* make the popup menu pretty
We now have a limited support of the code review. Still some work to be
done to allow the submission of new patches on a given review and update
the status. For the moment, only pre-commit review is supported.