* Removed main drop down menu
* Added "My cloud" to user menu
* Attract/Flamenco is found under Production Tools menu
* Attract/Flamenco has the same navigation as its project
This affects the user and notifications menus. It happens for two reasons:
- the only argument passed to the macros was current_user, which is always available
- we want to enable overriding and adding items to the menus via extensions
At the moment only the user menu takes advantage of the base template, since the blender-cloud extension makes use of it, while notifications.pug does not need it yet.
