Resolve "Navigation - Move contextual navigation to sidebar"

app/assets/stylesheets/framework/variables.scss

app/assets/stylesheets/new_sidebar.scss

app/views/layouts/_head.html.haml

app/views/layouts/_page.html.haml

app/views/layouts/admin.html.haml

app/views/layouts/group.html.haml

app/views/layouts/nav/_new_admin_sidebar.html.haml

app/views/layouts/nav/_new_group_sidebar.html.haml

app/views/layouts/nav/_new_profile_sidebar.html.haml

app/views/layouts/nav/_new_project_sidebar.html.haml

app/views/layouts/profile.html.haml

app/views/layouts/project.html.haml

config/application.rb