Add subresource integrity for JS and CSS assets (#15096)

app/views/about/more.html.haml

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

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

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

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

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

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

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

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

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

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

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

app/views/auth/sessions/two_factor.html.haml

app/views/home/index.html.haml

app/views/layouts/admin.html.haml

app/views/layouts/application.html.haml

app/views/layouts/auth.html.haml

app/views/layouts/embedded.html.haml

app/views/layouts/error.html.haml

app/views/layouts/modal.html.haml