i18n: externalize strings under 'app/views'

Problem to solve

As discussed in !19236 (closed), this issue will focus on externalizing strings from files under app/views, it will contain the MRs split from !19236 (closed), one for each directory under app/views/.

List of .haml files per directory:

• app/views/abuse_report_mailer (!19626 (closed))
• app/views/abuse_reports (!19628 (closed)) - picked up in !23203 (merged)
• app/views/admin (!19629 (closed)) - split into smaller merge requests (see below)
  • app/views/admin/application_settings (!19922 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6557)
  • app/views/admin/users (!19923 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6558)
  • app/views/admin/groups (!19924 (merged))
  • app/views/admin/applications (!19925 (closed))
  • app/views/admin/labels (!19926 (merged))
  • app/views/admin/identities (!19927 (merged))
  • app/views/admin/conversational_development_index (!19928 (closed)) - picked up in !24809 (merged)
  • app/views/admin/<others> (!19929 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6559)
• app/views/award_emoji (!19690 (merged))
• app/views/dashboard (!19691 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6525)
• app/views/devise (!19693 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6541)
• app/views/discussions (!19694 (closed))
• app/views/doorkeeper (!19695 (merged))
• app/views/email_rejection_mailer (!19696 (closed)) - picked up in !24809 (merged)
• app/views/errors (!19710 (closed))
• app/views/events (!19711 (closed))
• app/views/explore (!19713 (merged))
• app/views/groups (!19715 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6543)
• app/views/help (!19730 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6544)
• app/views/ide (!19731 (closed))
• app/views/import (!19732 (merged))
• app/views/invites (!19765 (closed)) - picked up in !23205 (merged)
• app/views/layouts (!19766 (merged)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6545) - picked up in https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8587
• app/views/notify (!19767 (closed))
• app/views/peek (!19768 (closed)) - picked up in !23207 (merged)
• app/views/profiles (!19769 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6546)
• app/views/projects (!19770 (closed)) - split into smaller merge requests (see below)
  • app/views/projects/blob (!19811 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6549)
  • app/views/projects/ci (!19856 (closed)) - picked up in !24617 (merged)
  • app/views/projects/clusters (!19824 (closed)) - picked up in !24666 (merged)
  • app/views/projects/commit (!19818 (closed)) - picked up in !24668 (merged)
  • app/views/projects/deploy_keys (!19855 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6555)
  • app/views/projects/deployments (!19848 (merged))
  • app/views/projects/diffs (!19813 (closed)) - picked up in !23230 (merged)
  • app/views/projects/environments (!19815 (closed)) - picked up in !23210 (merged)
  • app/views/projects/forks (!19847 (closed)) - picked up in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/27497 + https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/11235
  • app/views/projects/issues (!19817 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6550)
  • app/views/projects/jobs (!19841 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6554)
  • app/views/projects/labels (!19846 (closed))
  • app/views/projects/mattermosts (!19845 (closed))
  • app/views/projects/merge_requests (!19812 (closed))
  • app/views/projects/milestones (!19840 (closed)) - picked up in !24726 (merged)
  • app/views/projects/pages (!19823 (closed))
  • app/views/projects/pages_domains (!19844 (closed)) - picked up in !24723 (merged)
  • app/views/projects/pipelines (!19826 (closed)) - picked up in !26035 (merged) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6553) - picked up in https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/9972
  • app/views/projects/project_members (!19825 (closed)) - picked up in !23227 (merged) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6552) - picked up in https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8727
  • app/views/projects/protected_branches (!19819 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6551)
  • app/views/projects/protected_tags (!19816 (closed))
  • app/views/projects/runners (!19843 (closed)) - picked up in !23208 (merged)
  • app/views/projects/services (!19822 (closed))
  • app/views/projects/settings (!19821 (merged))
  • app/views/projects/snippets (!19828 (merged))
  • app/views/projects/triggers (!19842 (closed))
  • app/views/projects/<others> (!19857 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6556)
• app/views/repository_check_mailer (!19801 (closed)) - picked up in !23211 (merged) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6547) - picked up in https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8520
• app/views/search (https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/24297) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/9113)
• app/views/sent_notifications (!19803 (closed)) - picked up in !24576 (merged) / https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/9261
• app/views/shared (!19804 (closed)) - split into smaller merge requests (see below)
  • app/views/shared/issuable (!19930 (closed))
  • app/views/shared/milestones (!19931 (closed))
  • app/views/shared/notes (!19932 (closed)) - picked up in !23696 (merged)
  • app/views/shared/members (!19933 (closed)) - picked up in !23125 (merged) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6560) - picked up in https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8474
  • app/views/shared/boards (!19934 (merged))
  • app/views/shared/<others> (!19935 (closed)) / (https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6561)
• app/views/snippets (!19805 (closed)) - picked up in !23351 (merged)
• app/views/u2f (!19806 (closed)) - picked up in !23201 (merged)
• app/views/users (!19807 (closed))