initial draft for responsive navbar
Merge branch 'responsive_navbar' of https://github.com/edlab/bootstrap-vialogues into vialogues
Merge branch 'vialogues' of https://github.com/edlab/bootstrap-vialogues into vialogues
improve navbar responsiveness per Manavs request
Merge branch 'vialogues' of https://github.com/edlab/bootstrap-vialogues into vialogues