Revert "Revert "Merge branch 'issue_3946' into 'master'

CHANGELOG

app/assets/javascripts/dispatcher.js.coffee

app/assets/javascripts/namespace_select.js.coffee

app/assets/stylesheets/framework/dropdowns.scss

app/assets/stylesheets/framework/nav.scss

app/assets/stylesheets/pages/admin.scss

app/assets/stylesheets/pages/groups.scss

app/assets/stylesheets/pages/projects.scss

app/assets/stylesheets/pages/search.scss

app/controllers/admin/projects_controller.rb

app/helpers/dropdowns_helper.rb

app/views/admin/groups/_group.html.haml

app/views/admin/groups/index.html.haml

app/views/admin/projects/index.html.haml

app/views/admin/projects/show.html.haml

app/views/admin/users/_user.html.haml

app/views/admin/users/index.html.haml

app/views/shared/projects/_dropdown.html.haml

features/admin/projects.feature

features/steps/admin/projects.rb