moved `@breadcrumb_title` out of the HAML & into a helper method

app/helpers/breadcrumbs_helper.rb

app/helpers/page_layout_helper.rb

app/views/admin/applications/edit.html.haml

app/views/admin/applications/new.html.haml

app/views/admin/broadcast_messages/edit.html.haml

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

app/views/admin/services/edit.html.haml

app/views/groups/new.html.haml

app/views/groups/show.html.haml

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

app/views/profiles/show.html.haml

app/views/projects/blob/edit.html.haml

app/views/projects/blob/new.html.haml

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

app/views/projects/issues/new.html.haml

app/views/projects/merge_requests/creations/new.html.haml

app/views/projects/new.html.haml

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

app/views/projects/pipeline_schedules/new.html.haml

app/views/projects/services/edit.html.haml