When PressZilla is not installed, the submenus in the Bugzilla Bugs menu should be removed as they will never display anything.
Fixed in the devel-rewrite branch (see https://github.com/pressgang-ccms/DocBuilder2/commit/f7eb415ce58c44f44e1b282490aa5e99a9e9459c) The submenu items are now added by the PressZilla userscript. Additionally I also fixed an issue where the submenus weren't actually working properly in 1.8 due to the submenus never being built.
Tested on Chrome, works as expected. Trying Firefox now.
Created attachment 929015 [details] Message for Chrome/FF when script is not installed Checked on Firefox as well (F20). Works as expected. Attached screenshot.