user: Fix spelling of create-projects role.

This actually is right in the manual but displayed incorrectly on the
web interface.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
topbar: Include "Create project" in menu.

For users who only have the "create-projects" role, actually display the
item in the menu as the only option.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>