Implemented navigation buttons, and address bar, hide previous nav bar
Handle close toolbar tab
Merge branch 'master' of https://github.com/SocietyPro/Cambrian-src
Merge branch 'master' of https://github.com/SocietyPro/Cambrian-src
Merge branch 'master' of https://github.com/SocietyPro/Cambrian-src